[简答题]It can be a perfect mirror in certain lights，and the larger the glass，the more dangerous it is.

[简答题]It can be a perfect mirror in certain lights, and the larger the glass, the more dangerous it is.

[填空题]I can’t sing. I can’t dance, either. I can ___________sing ___________dance.

[单项选择]E-mail—can’t live with it, can’t live without it. Con artists and real artists, advertisers and freedom fighters, lovers and sworn enemies-they’ve all flocked to email as they would to any new medium of expression. E-mail is convenient, saves time, brings us closer to one another, helps us manage our ever-more-complex lives. Books are written, campaigns conducted; crimes committed-all via e-mail. But it is also inconvenient, wastes our time, isolates us in front of our computers and introduces more complexity into our already too-harried lives. To skeptics, E-mails just the latest chapter in the evolving history of human communication. A snooping husband now discovers his wife’s affair by reading her private e-mail--but he could have uncovered the same sin by finding letters a generation ago.
Yet E-mail-and all online communication-is in fact something truly different; it captures the essence of life at the close of the 20th century with an authority that few other products of dig
A. E-mail brings convenience as well as inconvenience.
B. E-mail complicates our lives.
C. E-mail links us to others more closely, but at the same time, it isolates us as well.
D. E-mail draws crowds of people who can’t live with or without it.

[填空题]I can’t catch what you have said.
I can’t catch______ ______you have said.

[单项选择]Having had her as a professor and adviser, I can tell you that she is an （） force who pushes her students to excel far beyond their own expectations.
A. inspirational
B. educational
C. excessive
D. instantaneous

[单项选择]Why can’t Tom come
A. He is ill.
B. He has to study.
C. He has to work.

[单项选择]Why can’t Sally play
A. He’s a doctor.
B. He’s a lawyer.
C. He’s a child.