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問題的種類

自然科學 大學

求解答案是否正確

Multiple-choice questions: (70 points) write the letter of statement that is not true: 1. A.B.U The Drude Model: (a) It is a classical approach using concepts from the kinetic theory of gases. (b) A relaxation-time approximation is used where the probability of collision is l/t. (c) No forces act on the electrons in between collisions. (d) It predicts accurately the electronic heat capacity of metals. 2. The Sommerfeld Model: (a) The crystal potential is replaced by an average Coulomb potential. (b) The separation of states is so close that a continuum model can be applied. (c) The electrons are highly localized due to a strong crystal potential. (Q) The energy of the highest occupied state at 0 K is the Fermi energy. 3. Density of states in k-space, N(k): (a) N(k) is determined by the boundary value conditions. (b) For lattices in any dimensions, N(k) is constant in k-space. (C) N(k) depends on the direction and magnitude of k. (d) It is directly proportional to the volume of the crystal. E影響, c 4. The Fermi surface of a metal: (a) is responsible for many of the transport properties of the metal, (b) depends on the nature of the chemical bonds, (c) is always a sphere, (d) can involve mixing of electron orbitals. ✓ 5. The conductivity of a material () increases with the mobility of its carriers, (b) increases with the density of carriers, (C) it is inversely proportional to the energy gap. cogu changes with temperature. 6. BID Plasmons: (a) They are an important characteristic of the Sommerfeld electron gas model. (b) Plasmons occur spontaneously in metals. (c) They are related to charge density oscillations. (d) The Plasmon energy is typically of the order of 10 eV. The Fermi energy Ef in intrinsic semiconductors 8) is usually close to y E, at OK (b) it ACiD. can increase or decrease with temperature depending on the ratio of hole and electron effective masses, (c) it represents the point at which the probability of occupation is 12, even though there may not been any states with that energy, (d) its value relative to the electronic bands must remain unaffected in the presence of defects or interfaces.

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英文 高中

求1.2.3

文意選填 In the Bible we can read many of Jesus' parables (ik). A parable is a simple story that_1_a moral lesson. For example, "The Parable of the Unforgiving Servant" is about the moral goodness of forgiveness. Jesus_2_the parable by saying that the Kingdom of Heaven can be compared to a particular situation in a worldly kingdom. A king was collecting money owed to him by some of his servants. One servant owed the king a lot of money but claimed he was unable to pay the debt 3_ The king ordered that the servant be sold with his valuable things, wife and children to make up the payment. On hearing this, the servant knelt down before the king and begged for mercy. He asked the king to be patient, so he could have time to pay back the money. The king felt pity for the servant and forgave him for his debt. The servant felt_4_ and left. Later, the servant went to see a fellow servant who owed him money. The man could not pay him, so the servant _5_him by the throat, saying, "Pay me what you owe!" The fellow servant fell at his feet and said, "Have_6_with me and I will pay your money back!" However, the servant showed no pity and had thrown him into prison. When the other servants heard what had happened, they reported the event to the king. The king was angry, and he decided to _7_the fellow servant. Then, he sent the one he had 8_forgiven to prison until he paid his debt. It was the_9_of his cruelty to others. Jesus finished the parable by saying that God will_10_ people who do not forgive others for their wrongs. This is a powerful story that sends us a message about the importance of forgiveness, whether we are religious or not. 文意選填 (A) relieved (B) patience (C) originally (D) immediately (E) release (F) firm (G) teaches (H) grasped (I) punish (J) escaped (K) began (L) result

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英文 高中

求詳解,感恩

1 2. 3 4. D) Basically, they go on voyage after voyage in search of an immense treasure buried somewhere by the King of the Pirates, Gol D. Roger. B C 閱讀測驗1 There he flies, turns, lands and—to da- a disaster is saved, by Superman. “Come on,” you roll your eyes. “That's NOT real.” But admit it -we LOVE superman. Since the debut of the prototypical superhero Superman in 1938, stories of various superheroes have dominated American comic books and crossed over into such other media as films and animations. Versatile as these super characters may be, they do share certain traits. We know the double-life secret that Peter Parker is Spider-man, Bruce Wayne the Batman, and Clark Kent the Man of Steel. The secret identity has a civilian job while the “super-me” puts on an eye-catching costume, or custom-made accessories like Wonder Woman's bracelets. We are concerned that the bad guys play tricks so as to hurt these protectors. Fortunately enough, our superheroes normally have a base to go for “restoration” to. The Batcave has everything the Batman needs. Isn't that great? Furthermore, these super icons may have some backups and do not always have to work independently. The Fantastic Four or X-men team up as they have common origins or sponsors. These super teams are like a marvelous circle. Nevertheless, there are downsides being a superhero. Credits are not always given as the Batman and Spider-man meet with public skepticism or outright hostility. A superhero may even lose control as the Hulk has an issue with his violent alter ego. We love to see the superheroes think big and achieve big. They for sure reflect what we are and what we want to be. In summary, superheroes are popular and iconic because they each represent a large part of a society's traits and values. Everyone can relate to at least one hero and villain, because those heroes are designed to show the best parts of society, and the villains represent the worst parts. 5 What can we say about the author's tone? (A) Angry. (B) Formal. (C) Harsh. (D) Relaxed. 48 主题5 藝文世界

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英文 高中

想請問45 在第三段後幾句 他說並不是全部人都買單 那不就代表他不夠popular嗎 那D選項為什麼對 還有46 b跟d明明超像吧?

66 學測週計畫‧英文 x } 分。 adi) T}; 第4至7題為題組 The fair-trade movement began in Europe in the post-war period, but it didn't draw people attention until the recent 25 years. According to its fundamental principles, fair trade 2 47.) w you were in the fai making trades fair to producers by having consumers from developed countries pay slightly problem mentioned ir (A) To place more adv for end products. The primary feature of the fair-trade system that distinguishes it from that of the open marke (B) To look for more (CL To lower the fees is the requirement of minimum prices paid for goods. Moreover, during good years, an addition (D) To reduce the hi amount of money is added to encourage and profit labor-offering producers. With financial aid purchasers of fair-trade products may help producers hire more adult workers, which can reduce he hiring of child labor. By paying more, they can also guarantee the safety of workplaces, and be farmers adopt eco-friendly fertilizers to protect the environment. However, although the fair trade system seems beneficial to farmers, and trades are on the increase, it actually leaves much room for criticism. For example, getting fair trade certification is expensive for small businesses and individual producers. They have to split their hard-earne money for being a fair trade member, which ends up being a burden for the poor producers that fair trade system originally urges to help. Such high administration fees inevitably lead to the result that products are sold at much higher prices which weigh on consumers. Hence, customer base around the world is limited, because not everyone is willing to pay extra fees when they can get products of the similar quality but with lower prices. Worst of all, the administration fees don't go to the suppliers but retailers. Although there are obvious advantages of fair trade system, its disadvantages are likely to form a vicious circle and may shrink the fair trade market, if the basic problem doesn't get tackled. 44 Which of the following is the best title for this passage? (A) The History of Fair Trade qobis (Bil How to Become Fair-Trade Producers (C) How Fair Is Fair Trade? DNThe Cost of Fair-Trade Practices Which of the following statements is NOT true about fair trade? og AT of a spire- (A) Fair-trade producers use environmentally friendly fertilizers. resembles B) All fair-trade crops are sold at higher prices in the market. on its ext (C) Producers have to pay for official proof of fair-trade associations. Cam the talles Fair trade products are popular and sold to every country in the world. To dow As 46. What is the correct order of the main ideas for the paragraphs 1-3? with aw TA) Fair trade and globalization 48 Acc (B) The time when fair trade began — The advantages of fair trade → The impact of fair trade api (C) The first fair-trade producer → The increasing sales of fair-trade products A consumers to farmers (D) The goal of fair trade system → The advantages of fair trade — The imperfection of fair trade p 第責部分 第48至几題為題組 As water is to p no beautiful decorat This list could go to the similar style structures in the w One great e British architect there are mainly to break this col this innovative concept of it i building elabc functions of w Anot 2 Also calle Piano, an It purposes like two fundan rise. T Da Totein gorofa obito Bol to do 14 → The cons of fair trade → The pros of fair trade 帥8% → The help of 49. TL

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