题目

在细胞的生命活动中，许多重要的代谢反应发生在生物膜上。发生在酵母菌生物膜上的代谢反应是 A.氨基酸的脱水缩合                 B.DNA的复制与转录 C.O2与的部位是________。 (2)光照过强、高温或干旱会导致植物光合作用速率下降，主要原因是____________________________，此时C3的生成速率会________(填“增大”或“降低”)。 (3)当植物细胞发生图1中的过程③时，此时的光照强度可对应图2的________(填“OB段”“OD段”或“BD段”)，此区段内植物细胞Some Advice on Travel①Forget fashion(时尚)! Always wear your most comfortable clothes when going on long journeys.②Traveling on trains and buses can be boring, so take a good book to read.③If you're going somewhere cold, remember your warm clothes!④Or, if you are going somewhere sunny, remember to wear sun block(防晒霜) and sunglasses.⑤Always take a camera with you to capture those special moments.⑥Be careful with your things whenever you go to busy places, like a train station. There are often thieves there!⑦Always leave room in your bag for buying presents on the way home.⑧Most countries have lower prices for students, so if you have one, take your student card with you and save money.⑨Bus tours often stop at expensive shops along the way. Save your money by buying presents at local shops.⑩If you travel abroad, remember to take your passport(护照)，whatever you do, don't lose it!⑾.Know more about the foreign customs and cultures before you get to other countries. This can help you have a better time.根据短文内容，选择最佳答案。1.If you go to Hainan Island for a trip in summer, you should take with you.A. warm clothes and sports shoesB. sunglasses and sun blockC. fashionable clothes and a big bagD. some fruits and drinks2.According to the passage, is a good way to keep away from boredom(单调) while you are on a train or a bus.A. taking a camera B. reading a good bookC. listening to music D. sleeping for some time3.If a student wants to buy some presents at lower prices while traveling, he should show to the shop assistant.A. prices B. his thingsC. his passport D. his student card4.The underlined word "capture" in this passage means " ".A. 拍摄 B. 感受 C. 抓住 D. 控制5.If you want to go to another country, can help you have a nicer travel.A. to take your passportB. to know more about the country's customs and cultureC. to look after your things wellD. to leave your bag in the room