She felt _____ of having asked such a silly question when the audience couldn't help laughing.

A. guilty  B. crazy C. miserable  D. ashamed

As more and more cars are produced and used, so the _____ from their exhaust-pipes contains an even larger volume of poisonous gas.

A. exposure  B. distribution  C. expansion  D. emission

He didn't tell us the truth ___ elevent o’clock last night.

A. until   B. unless   C. since    D. for

---Wow! They look so delicious!---_____.

A. please help yourself   B.Help yours   C. Yes, they do    D. NO, they don’t

Scientists have to work hard to keep _____ with modern discoveries and developments.

   A. company    B. track    C. touch    D. pace

The map was drawn to the standard _____ of 1/100,000, so there was not much detail.

A. route    B. line    C. rate    D. scale

Don't _____ the news to the public until we give you the go-ahead (许可，准许).

   A. release    B. discard    C. relieve    D. retain

请认真阅读下面对话，并根据各题所给首字幕的提示，在答题卡上标有题号的横线上，写出一个英语单词的完整、正确形式，使对话通顺。

K=Kathy

M=Mum

M: Kathy, have you decided what you’re going to do in the vacation?

K: I need to (76) e________ some money. I’d try to find a job looking after children. What do you think, mum?

M: It’s not an easy job and you don’t have any particular (77) k_______ about children. Some children could be noisy and badly (78) b___________. Do you have any other ideas?

K: Not (79) r________. I don’t think much of the jobs I’ve seen (80) a_________

(A week later)

M: Kathy, are you still looking for a children job?

K: No, Mum. I (81) m_______ to tell you earlier. I’ve been offered a job in the office of the local computer factory and it’s well paid. I’ve decided to take it and will (82) s________ on Monday.

M: Good! Tell me more (83) d________ about the job.

K: I will work as a (84) s________, typing letters, answering phones calls and so on.

M: Some people may find it busy and (85) b________, and you need to be patient and careful.

K: Thank you, Mum. I’ll try my best.

 Evidence obtained from observation and experiment is often used to _____ a scientific theory.

   A. confirm    B. confine    C. conform    D. conceive

Achieving a high degree of proficiency in English as a foreign language is not a mysterious _____  without scientific basis.

A. process    B. practice    C. procedure    D. program