第1题
A.Because cannabis proved to be more harmful than tobacco.
B.Because cannabis is already so widespread.
C.Because it is not known whether cannabis may be harmful or not.
D.Because cannabis is proved to be positively harmful.
第3题
Unwanted e-mail may ______
A.cause companies to fail in business
B.cause wanted e-mail messages to lose
C.damage the credit of a company
D.do good to a small company
第4题
第5题
第6题
Compared with other cities, companies may prefer to send employees to Tokyo.
A.Right
B.Wrong
C.Not mentioned
第8题
A.to sign
B.to be signed
C.signed
D.signing
第9题
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