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【单选题】
下列关于河豚毒素说法不正确的是（）A.
毒素作用神经系统
B.
卵巢和肝脏毒性最大
C.
新鲜的河豚鱼肌肉中不含毒素
D.
加热至100℃即可分解
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反馈参考答案：
举一反三
【单选题】丹参酮的体内分布说法正确的是
A.
体内分布广泛，可以透过血脑屏障
B.
主要分布在肝，心脏分布较少
C.
体内停留时间短，主要从尿中排泄
D.
口服吸收较快， t1/2 较长
E.
心脏分布较多
【单选题】--_____ did you ________the summer vacation? -- It was terrible . I have too much homework to do .
A.
What; like
B.
How , like
C.
How; think of
D.
What ; think
【简答题】发送电子邮件时需要建立连接,发送完后将连接断开,这种发送方式是由哪一层决定的
【单选题】听力原文：W: You didn't have too much trouble fixing your car engine, did you? M: It only took me most of the day. Q: What does the man mean? (15)
A.
He had no time fixing his car engine.
B.
Fixing his car engine took him a lot of time.
C.
He only fixed part of his car engine.
D.
His car engine turned out well.
【单选题】You must have been there, ____________?
A.
have you
B.
did you
C.
haven’t you
D.
didn’t you
【简答题】C Isn't it astonishing how much time we spend talking about food? “Have you ever eaten …?” “What did you have for lunch?” and so on. And yet when you travel from one country to another, you will find ...
【单选题】Woman: Did you have much trouble with the exam? Man: Not really. Question: How was the man doing with the exam?
A.
He didn't have much trouble.
B.
He is sure that he did perfectly in the exam.
C.
He did very badly in the exam.
D.
He didn't take the exam.
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