Scientists say it may be ten yearsthe medicine was put to use（）

A.if

B.whether

C.that

D.as

A．since

B．when

C．after

D．before

A.the earth’s surface

B.the surface of earth

C.the earth surface

D.the surface of the earth

it is possible to test this medicine on human patients.

(A) since (C) after

(B) before (D) when

A) since

B) before

C) after

D) when

A．Some researchers have told them

B．Many women say so

C．They know it by experimenting on rats

D．They know it through their own experience

A.No, not at all.

B.No, no, my English is poor.

C.Thank you. It’s kind of you to say so.

D.Oh, no. Far from that. I still have a long way to go.

Being a shareholder of a public company means that ______.

A．you have a say in the daily management of the company

B．you become a member of the board of directors

C．you have one vote per share to elect the board of directors

D．you can air your view on how to run the company