单项选择题A．He hasn’t had time to do the experiment.B．The experiment took a lot of time.C．The experiment turned out well.D．He only did part of the experiment that day.

单项选择题A．A lot of stolen credit cards were sold on the Internet.B．Cheat on the Internet.C．Many Web sites are destroyed.D．Many illegal Web sites are on the Internet.

单项选择题A．It’s rather expensive.B．It’s too small for the man.C．It has plenty of light.D．It doesn’t have many closets.

单项选择题A．comparisonB．contrastC．contraryD．difference

单项选择题A．doubtfulB．consciousC．sensitiveD．sensible