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阅读理解。 Mike was starting the fourth grade in the autumn. He felt that he was old enough to ride a bike to school like other kids. But there were two problems! The first was that he didn't know if his parents would let him ride a bike to school. The second and the bigger of the two problems was that he didn't have a bike, because he and his parents had just moved to the town this summer. Mike started to get over his problems. First, he asked his parents if they would let him ride a bike to school in the autumn. To his surprise, they said, 'Sure, Mike, you are old enough, but you don't have a bike!' Mike began to think about how to solve the problem. Finally, he thought of an idea. He asked the neighbors if he could mow (割) their lawns (草坪) to earn money to buy a bike. For all of them needed to mow their lawns, they told Mike that would be fine, if his parents agreed. Mike's parents were pleased that he found a way to buy a bike himself. They agreed and taught Mike how to mow the lawn properly. Finally, he had enough money to buy his bike. He bought a beautiful black and red mountain bike. 1. Mike wanted to _____. A. begin to study in autumn B. ride a bike to school C. mows the lawn for his family 2. What was the bigger problem for Mike? A. He didn't have a bike. B. He was not old enough to ride a bike. C. His parents didn't want him to ride a bike. 3. What is the right order of the following events according to the article? ① Mike had two problems. ② Mike bought a bike. ③ Mike thought he was never too young to ride a bike. ④ Mike mowed the lawns for his neighbors. A.①②③④ B.②①④③ C.③①④② 4. Which one is WRONG according to the passage? A. Mike's family was new on his block (街区). B. Mike was a gardening worker. C. Mike bought a black and red bike. 5. Which is the best title? A. Mike's kind neighbors. B. Mike's new bike. C. How to earn money.
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B.
仅1R,2S异构体有抗菌活性
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分子中硝基可还原为芳伯氨基
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轴向加载
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径向加载
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组合加载
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B.
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临床上主要用于治疗伤寒、副伤寒、斑疹伤寒
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对革兰阳性菌的抗菌作用强于阴性菌
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可用于流感
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A.
0.5%
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1%
C.
5%
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10%
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维生素B6可预防氯霉素、青霉胺引起的视神经炎
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红霉素及其酯化物可正常应用,必要时减量给药
C.
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D.
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