答案　C

3.What are bioinformaticians?

A.Those who combine computer skills with knowledge of biology.

B.Those who combine medical skills with knowledge of biology.

C.Those who combine tourism skills with knowledge of biology.

D.Those who combine health skills with knowledge of biology.

答案　A

4.What is the most important character for the guides of adventure holidays?

A.Physical fitness.

B.An outgoing personality.

C.Both A and B.

D.Not mentioned in the text.

答案　C

重点词汇

1.I haven't signed the contract yet.我还没签合同。

sign vt.& vi.签字；签署；做手势；示意；n.征兆，标志；符号；手势

sign for/to sb. to do sth. 示意某人做某事

sign in/out签到/签退

sign up for报名参加；登记注册

There is no sign of...没有......的迹象。

(1)He took out his pen and signed his name on the cheque.

他取出钢笔在支票上签了名。

(2)The teacher signed to me to come(come) in.

老师打手势让我进去。

(3)For safety reasons，please sign in when you arrive at the building.

为了安全起见，请到达大楼时签到。

(4)I'm thinking of signing up for a yoga course.

我在考虑报名参加一门瑜伽课。

[单句改错]

(5) is no sign of any games and I only spot one child.

2.Now think of some more questions to ask people applying for these jobs.

现在想出更多的问题问一下申请这些工作的人。