年級

科目

問題的種類

自然 國中

[生物] 這四題,求解

三、生物科單選題:每題2分,共30分 將雞蛋的卵膜以細線固定於玻璃管下方,取1%沉澱液5ml 由玻璃管上端 小心注入卵膜內後,置入裝有 10%葡萄糖液的燒杯內(如右圖所示),靜置 一段時間後觀察,下列敘述何者正確? (A)蛋膜會膨脹,玻璃管內的液面會上升 (B)蛋膜會萎縮,玻璃管內液面會下降 (C)蛋膜及玻璃管的水位均未有任何改變 (D)當最終水位變化達靜止後,表水分子不再移動 下列有關 DNA 雙股螺旋結構的敘述,何者錯誤? (A)核苷酸之間以磷酸根相連 (B)嘌呤和嘧啶間以氫鍵相連 (C)每條雙股 DNA 中含氮鹼基的數目:(A+T)/(C+G)=1 (D)以半保留的方式複製出新的 DNA 一、由圖爲一個豌豆莢,其內有6個種子,下列敘述何者錯誤? (A)此豌豆花子房內至少有6個胚珠 (B) a、b的基因型完全相同 (C) b構造是經雙重受精而來 (D)成熟時,a、b、c內所有細胞的染色體套數均相同 FOQ 玻璃管 1%澱粉液 10%葡萄糖液 下列有關呼吸系統的敘述,何者錯誤? (A)潛水夫病是由於異常氣壓下,使組織中溶解過飽和的氮氣因釋放膨脹而成氣泡,堵住血管 (B)高山症是因爲高山上氧氣分壓降低,導致血紅素與氧氣結合率下降 (C)肺氣腫患者的肺泡因過度擴張而多個融合爲一個較大的氣囊,使氣體交換的表面積變得小 (D)腦部呼吸中樞控制的呼吸肌爲不隨意肌 +A E LABITTERFA

待回答 回答數: 0
英文 國中

求解 65、71、83 、84、85 拜託大家了 謝謝🙏

( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( )65. My brother fooled around, (1) and does (2) did )66. The poice are trying to find a )67. I found quite a few men and women (1) rush (2) rushed ( ( ( ( ( )68. Engines are machines. (1) that produces (2) producing )69. Thousands of products (1) make nothing meaningful. (3) and doing (4) doing child. (1) lose (2) lost (3) miss (4) missed (1) spoken )74. When I returned (1) to steal (3) rushing power or motion. (3) produced from coal are now in daily use. (2) made ouer (3) making )70. There are many commuters (1) waiting for (2) waiting )71. In spite of my comfort, the punished (1) to crying (2) cried )72. I found a dog (1) to run )73. Generally out of the building on fire. (4) to rush )75. Give the message to the gentleman (2) stands (1) standing )76. The pollution level the train at the station. (3) wait for boy went away (3) to cry )84. (4) which producing (4) to wait for (4) crying over by a car on the road. (3) ran (2) run (4) running reports are prepared for busy administrators. (2) speak (3) speaking (4) spoke home, I found the window open and something. (2) stealing (3) stolen (4) stole (1) sit (2) seat )79. We found that the house (1) standing (2) stands )80. Those old people sat under the tree (4) to make (3) who stand (4) stood high today, people can not help breathing in car exhaust. (1) is (4) has (3) being )77.__ from space, the earth is almost perfectly round and appears to have a smooth surface. (1) Seen (2) Moved (3) Found (4) Kept (2) has been )78. When I entered the room, I found him by the fire. by the door. (3) seating (4) seated in the distance was deserted. (3) who stand (4) stood stories. (3) to speak (1) telling (2) to tell )81. He is so faithful that I have never heard him the ghost (4) spoke others. (1) speak ill of (2) spoken ill of (3) to speak ill of )82. The poor crippled child (4) speaks ill of on the ground became my daughter's (3) laying (4) lying (2) lain main concern. (1) lied )83. The nurse approached the child, to make him relaxed. (1) and tries (2) trying (3) and trying (4) tried by the policeman, the robber ran toward the shopping mall and disappeared. (1) Seeing (2) Seen (3) To see (4) Having seen )85. You must leave your room to be on the safe side. (1) lock (2) locked (3) to lock (4) locking

待回答 回答數: 0
數學 國中

想問第25題謝謝🙏

14 15 4 D 2 請閱讀下列敘述後,回答第24~25 題 冠狀病毒是一種可感染哺乳動物和鳥類的病毒,屬於網巢病毒目冠狀病毒科,為具有包 膜的正單鏈 RNA病毒,其平均直徑約為100 mm(奈米)呈球形或橢圓形,包膜上存有 棘突,整個病毒像日冕。2019 新型冠狀病毒(COVID-19)是目前已知的第7種可以感 染人類的冠狀病毒,累計至2021年4月為止,全球已有超過1.4 億人確診,至少300 萬人以上死亡,各國莫不以加速接種疫苗為首要目標,期盼盡快回復正常社交生活。觀 察冠狀病毒須以電子顯微鏡才能清晰辨識,而為了更精準檢測新冠肺炎,利用PCR(聚 合酶連鎖反應)方式檢查,即所謂的基本核酸檢測,這種檢查方式是以2的次方倍實驗 複製分裂,把極微量的核酸持續複製擴大,利用其循環數閥值(Ct值)來表示其感染狀 況,在實驗室中每放大2倍就是一個Ct值,換句話說,Ct值 30 就是代表檢體病毒基因 放大20倍才被觀測到,一般檢測目前以C 34 為標準,Ct值高於34 表示目前判斷可能 為陰性,不過仍不可視為唯一標準,可有其他數據一起判斷才行。 24 若以人類頭髮直徑約80 un(微米)而言,則冠狀病毒的直徑為頭髮直徑的多少 the ? (1 nm=10-ºm, 1 um=10m) (A) 1.25 X 10-3 (B) 2.25 X 10- (C) 8X10-3 (D) 2.5×10-2 9 A Uso -3 - Dy00008 0.000000 O ound minnie DO * ppm 5 已知 表示百萬分之一,ppb 表示 10 億分之一,而C:34 相當於 pp176,表示 170 億分之一,才有可能檢測出來,可見其病毒量是很少的,若以此數據為標 * * *] wf 32 FH ***: (P) Ct 28 (2) pp16b) (*) pp186 - (T) Ct 12 • 9*** T *] 197 為陽性? 8 (A)(甲)(乙)(丙)(丁) (B)(甲)(乙)(丁) 31 (C)(甲)(丙)(丁) (D)(乙)(丙)(丁) 32

待回答 回答數: 0
1/3