Although the old worker has limited technical knowledge,he has a lot of experience.

______ he has limited technical knowledge, the old worker has a lot of experience.

A．Since

B．Unless

C．As

D．Although

A．Since

B．Unless

C．As

D．Although

The old worker has been on the ______ in this factory for nearly 20 years.

A．paypacket

B．payoff

C．payroll

D．payment

Judging from what he has written, we can know that the writer is ______.

A．an experienced reporter

B．a medical researcher

C．an alcohol producer

D．a social worker

A、and

B、/

C、however

D、but

What is the real cause of the new protectionism？

A．The old one has begun to be unable to explain the new situation of different countries.

B．The welfare developed really fast in Northern Europe.

C．There is some suspect of the regulating ability of the current market.

D．The old protectionism is too limited in its definition.

Old Fred does something stupid because ______.

A．he has some mental problems

B．he is too old to know what he is doing

C．he wants to have a good Christmas

D．he has got into the habit of stealing