指出下列是无穷小，还是无穷大．

W: But people used to blame it on factories.

Q: What did we suppose to be responsible for the smog？

(19)

A．Factories.

B．Automobiles.

C．American cities.

D．Flames.

What factors are responsible for the difference in the properties of CO₂and SiO₂？

Don't blame him for this; I am responsible ______ what has happened.

A．in

B．to

C．for

D．with

What would be the best title of this passage？

A．Permissive Parents and Responsible Parents.

B．Censorship and the Law.

C．Censors Value Artistic Merits.

D．Censorship Performs Good Service to Society.

What is unresolved about this play is ______.

A．who is responsible for the tragedy

B．whether Romeo and Juliet are tragic characters

C．what the most fascinating element of the play is

D．how tragic fate can be avoided

What is Jeremy going to be doing in Paris？

A．Being responsible for a factory

B．Transferring the woman overseas

C．Overseeing the international marketing department

D．Building big steps