心肌不会产生强直收缩的原因是 A．心脏是功能上的合胞体 B．心肌肌质网不发达，Ca2

阅读理解。

     Do you read advice columns in newspapers and magazines? Do you think they are helpful to everyone

who reads them? Here are some:

Dear Sally,

     I've got a problem. My good friend Lana in my science class asked me to lend her my exercise book so

she could copy my answers. Should I do it. Sally? I don't want to,but I'm afraid that if I don't give it to her

she won't be my friend any longer.

                                                                                                                                    Carmen

Dear Carmen,

     Of course you can't give her your exercise book. That's cheating, and you could get into big trouble if

you do that.

                                                                                                                                      Sally

Dear Sally, 

     I was at friend's house for dinner last Saturday. During dinner, I broke a beautiful plate. It was my

friend's favorite wedding gift. I wanted to pay for it, but she didn't agree with me. I feel bad about it.

                                                                                                                                        Kay

Dear Kay,

     I think you did the right thing. It was important to offer to pay for it,but it's not surprising that she

said no. Perhaps you could give her a special gift instead.

                                                                                                                                       Sally

Dear Sally,

     My son is 24 years old. He finished college last year,but he can't seem to find a job that he likes.

I'm worried that he's not trying hard enough to get a job and live on his own. He sleeps till noon every

day. Also I've been cooking his meals.

                                                                                                                                     Lisa

Dear Lisa,

      You're making it too easy for him to stay where he is.Tell him he has two months to find a job (any job)

and get his own place. He's old enough to take care of himself. 

                                                                                                                                      Sally

1. Lana wanted to borrow Carmen's ______.

A. plate

B. science book

C. dictionary

D. exercise book

2. What's Kay's problem?

A. She broke her friend's plate.

B. She lost her exercise book.

C. Her friend didn't like her gift.

D. Her son didn't find a job.

3. Sally suggested that Lisa's son should ______.

A. find an interesting job

B. sleep till 9 o'clock

C. find a iob in two months

D. look after his mother

4. Which of the following is NOT true?

A. Carmen and Lana are good friends.

B. Lana wanted to copy Carmen's answers.

C. Lisa's son finished college at the age of 22.

D. Kay's friend liked the plate very much.

某航空母舰上的战斗机起飞过程中最大加速度是a=4.5m/s²，飞机速度要达到V₀=60m/s才能起飞，航空母舰甲板长为L=289m，为使飞机安全起飞，航空母舰应以一定速度航行以保证起飞安全，（设飞机起飞对航空母舰的状态没有影响，飞机的运动可以看作匀加速运动）则航空母舰的最小速度v是（　　）

A．9m/s

B．

C．8m/s

D．以上答案都不对

(b) Compute the taxable income of Woodcrafts Pakistan Limited for the tax year 2008 under the appropriate heads of income, giving clear reasons/explanations for the inclusion or exclusion in the computation of taxable income of each of the items listed.Note: the reasons/explanations for the items not listed in the computation of taxable income should be shown separately from the other reasons/explanations. (25 marks)

从所给的四个选项中，选择最合适的一个填入问号处，使之呈现一定的规律性（）

A.选项A

B.选项B

C.选项C

D.选项D

气相色谱分析影响组分之间分离程度的最大因素是（）。

A、进样量

B、柱温

C、载体粒度

D、气化室温度