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【单选题】
猪笼草是一种食虫植物，它以瓶状带盖的叶捕捉昆虫，并以其分泌物消化虫体。某课题研究小组为检测此分泌物的性质，作了如下的实验：取6支试管，加入经过不同温度处理的检测液后，再分别加入瘦肉块和马铃薯块，两小时后观察现象，记录如下表。 关于此实验的解释，不正确的是（）
A.
试管1和试管4对照作用
B.
试管5证明酶的活性受温度的影响
C.
猪笼草捕食昆虫主要是对土壤溶液中缺少N元素的一种适应
D.
猪笼草分泌物中含有蛋白酶，不含淀粉酶
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【单选题】Israel and Hamas had reached a deal on extending the ___ ceasefire by and extra 24 hours until Tuesday at midnight.
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【单选题】Susan: Do you think we should accept Johnson's research proposal? Barry: I don't know. ______
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B.
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likes to relax on the beach
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【单选题】(Jane: Tim, take the umbrella with you when you go to school. There is going to be a big storm this afternoon. Tim: Really? It’s great. I haven’t got an umbrella, so I’d better stay indoors. I can stu...
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D.
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查看完整题目与答案
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查看完整题目与答案
【简答题】阅读理解。 阅读短文，判断下列句子的正（T）误（F）。 Tony is 13 years old.He goes to a boarding school (寄宿学校). He stays in the school five days a week. He likes singing and playing basketball. But he wants to be in the baseba...
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A.
contemporary
B.
makeshift
C.
spontaneous
D.
temporary
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