下列哪些疾病属于生物地球化学性疾病A．黑脚病，疼痛病B．水俣病，地方性氟病C．黑

A．Had I known ， would ring him up

B．Should I know ， would have rung him up

C．If I knew ； would ring him up

D．Had I known ； would have rung him up

I didn't know his telephone number, otherwise I ______ him.

A．had telephone

B．would telephone

C．would have telephoned

D．telephone

Section A

Directions: In this section, there are 10 incomplete sentences. You are required to complete each one by deciding on the most appropriate word or words from the 4 choices marked A , B, C, and D.

I'm sorry I don't know his telephone number. I wish I ___________________________.it.

A．have known

B．had known

C．knew

D．know

A．Then did I know

B．Only then I knew

C．Only then did I know

D．Only then knew I

听力原文：Who was that on the telephone？

(A) No, the number isn't on it.

(B) I don't have their number.

(C) It was a wrong number.

(11)

A．

B．

C．

I'm sorry to say that neither Bill______Mary knows Bob's telephone number.

A．and

B．or

C．nor

I'm sorry to say that neither Bill______Mary knows Bob's telephone number.

A．and

B．or

C．nor

James has Just arrived, but I didnt know he ______until yesterday.

A．wiU come

B．was coming

C．has been coming

D．came