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問題的種類

物理 高中

請問第四題的D、第五題🙏🏻

40 波的頻率與折射波的頻率相同。 太陽表面在2017年9月接連發生一起被稱作「太陽閃焰」的大型爆發,規模為10年來最大。科學家預計爆發所噴出 的帶電粒子團兩天後抵達地球,撞擊大氣層後產生電磁波,以致影響通訊品質。已知太陽與地球距離約為1.5x1011 公 C尺,光速約為3.0x108公尺/秒。下列敘述哪些正確? 0 (A)電磁波並無繞射與干涉的現象(B)電磁波在空間傳播須以帶電粒子為介質 1.5×103 500 3x68 (C) 電磁波具有隨時間作週期性變動的電場與磁場D 帶電粒子團脫離太陽時的速率約為8.7×105 公尺 / 秒 (E)帶電粒子團撞擊地球大氣層之後約8分鐘,地球上才能觀測到太陽閃焰影像。 折射線 我們常在生活中聽到2.4G無線這樣的名詞,根據美國聯邦通訊委員會(Federal Communications Commission)所定義, 2.4G是指在ISM 頻段中,2.4~2.4835 GHz之間的頻率,完整名稱為 Industrial Scientific Medical Band,是預留給工業、 ·科學及醫療使用的免費頻率,沒有任何使用上的限制。依本文所言,下列敘述哪些正確?(光速c=3x108m/s) (A) 2.4G 中的最長波長約為12.5cm (B)頻率愈大者,其傳播速度愈快 (C)波長愈長者,其傳播速度愈快 (D)只能在地球上傳播(E)可以在太空中使用。 甘零件油左直空中的波長約為300奈米,下列有關此電磁波的敘述,哪些正確? 去完的頻率約為1015 赫茲

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英文 高中

想問12,為什麼不是B是D?

1.. 試卷 考科 ment I the 參考試卷 英文考科 第11至15題為題組 elaborate 19 •fictional 第2頁 共10頁 April Fools' Day, one of the most light-hearted days of the year, has an unclear origin. Some see it as a celebration related to the turn of the seasons from winter to spring; others, however, believe that it 11 the adoption of a new calendar. Ancient cultures celebrated New Year's Day on or around April 1, which roughly coincides with the beginning of spring. In 1582, Pope Gregory XIII ordered a new calendar, which called for New Year's Day to be celebrated on January 1. However, many people, either refusing to accept the new date or not having heard about it, to celebrate New Year's Day on April 1. Other people began to make fun of these traditionalists, sending them on "fool's errands" or trying to fool them into believing something false. 13, the practice spread throughout Europe and the rest of the world. 12 Nowadays, on April Fools' Day, people often 14 to create elaborate hoaxes to fool others. Newspapers, radio and TV stations, and websites have participated in the April 1 tradition of making 15 reports in order to fool their audiences. The BBC once reported that Swiss farmers were experiencing a spaghetti crop and showed scenes of people harvesting noodles from trees. Guess what? A great number of viewers were fooled. (A) leads to (B) brings out DB(A) continue (B) continuing (C) stems from (C) to continue (D) comes across B 13. (A) Precisely (B) Eventually (C) Additionally buy B(A) come to an end (B) go to great lengths AS 15. (A) fictional 第16至20題為題組 (B) essential (C) put in service (C) ancient (D) continued (D) Literally (D) hold in store (D) subjective

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英文 國中

我這樣寫對嗎👀👾(八上文法宅急便)

(A) 18 【小試一下] (一)填充題 1. Before he eats pizza, he will wash 2. When I save enough money, I will take 3. After Joe knows about the fact, he Will everything about it. (二)翻譯填空 1. 在他來這裡之前,我會等他。 I will wait for him 2. 嬰兒一歲時,我將買給她一份可愛的生日禮物。 When the baby is one year old, I (W) will gift for her. 3. 完成她的自然功課後,她將打電動一小時。 •練習 She'll play science homework. (一)依提示作答 video games for an hour his hands. a trip to Japan for a week, call me up and tell me (C) V before he Come here. (B) buy A a lovely birthd after she finisher A A B F David will have free time tonight. (用 When 開頭合併為一句 ) He will go to a concert with Anna. When David have free time, he will go to a concert with 2. After Jim washes his hands, he will eat the pizza. (Before 翻譯 Anna Toni Before Jim eats the pizza, he will wash his hands. 1. 今晚吃晚餐後,我和我太太將在公園散步。(Mywife... will.... will...) My wife and I will go for a walk at park after dinner. 2. 這個週末有空時,爸爸將幫忙我的數學功課。(Dad will help with...) Toni Dad will help with my math homework when he has frec 學力模擬演練 單題(每題5分,共75分) 1. Mr. and Mrs. Smith did not know much about Taiwan when they beautiful island. this weeken 得分 ( ( to the (A) came (C) are coming (B) come (D) comes

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數學 國中

求解🙏

(41~43) Notice Stay Quiet or Keep Your Voice Down in the Back Yard: I've gotten several complaints from neighbors about the loud noise that was made when you were washing pots, dishes, and clothes during break time. Though you are only staying here for the summer, I don't want people to think that players from Sunny Basketball Team are just a group of teenagers without discipline. 41. You may have heard that yesterday one of your team members came down with a high fever and was sent to the hospital after she was bitten by a cat. - Don't Feed Wild Cats or Dogs: Feeding them only draws more. 42. set for : You are here for training, not for summer vacation. You can enjoy each break I you, but be prepared for practices and show up on time at 7 a.m. and 2 p.m. every day. 43. I will drop you from the team. If you don't wear your full uniform to the training more than once, I will also drop you. The rule starts from today. -Head Coach of Sunny Basketball Team | complaint 抱怨 discipline 紀律 wild 野生的 coach教練 41. (A) They have no place to stay, and we need to help them. (B) They make the camp not only dirty but also dangerous. (C) They make us full of joy every time we see them. (D) They are sick and need doctors to treat them. 42. (A) Wash Your Clothes All the Time (B) Get Enough Rest Every Day (C) Make Sure Your Uniform Is Clean (D) Be on Time for Every Training Day 43. (A) When the training is over (B) If there is not any training (C) When you finish all the training (D) If you're late for training more than once

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英文 大學

哪一個段落沒有主題句? 我覺得是第一個,對嗎? 要怎麼替這個段落寫出主題句呢?

2 Despite different home cultures and countries, international students' main overall motivation is the desire get out on their own, to carve out a new direction in their lives. "Foreign students" do not casually abandon the comforts of family and cultural ties; they have done their homework on Canadian schools. All their preparation, though, cannot prepare them for the loneliness and ongoing difficul- ties they face, from cold winters to financial issues related to the higher tuition fees they must pay. Some students, though, emigrate to escape those same tight- knit families and bonds that others find so painful to leave behind. A Macleans "On Campus" report notes that family expectations may be opposed to students' visions for themselves and lead them to reject accepted values and career paths in their hometowns and countries. Csilla, a web-design student at Waterloo admits, "I was always supposed to enter my family's restaurant business in Budapest, but I felt suf- focated even working part-time as a server. Web design is my passion, and I wanted 12: CAUSE OR EFFECT [- a completely fresh start, something that is completely my own ("International Stu- dents"). Finding independent paths to their own dreams is the key here, whether students choose those paths as a result of personal ideals or as a reaction to pre-set future plans.

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