1. All kinds of techniques and medicines ______ to extend human beings life in recent years.
A. have developed
B. were developed
C. are being developed
D. develop
2. A week after the interview, he received a letter ______ him the job.
A. offering
B. to offer
C. offered
D. offer
3. Working part-time while ______ the same standard of living seems like everyone’s dream.
A. preserving
B. maintaining
C. manipulating
D. persisting
4. “Susan, I’d like to talk to you alone,” said the teacher, clearing the room ______ other people.
A. from
B. with
C. of
D. off
5. Attachments ______ to your Hotmail account can be downloaded to your personal computer by clicking them.
A. sending
B. to send
C. sent
D. are sent
1.【答案】C。解析：考查时态语态。句意：近些年所有的技术和药物研发都是为了延长人类的寿命。主语为techniques and medicines，所以应该用被动语态，时间状语是in recent years故应该用现在的时态，故正确答案为C。
2.【答案】A。解析：考查非谓语。句意：面试过了一周后，他收到了录取通知书。现在分词短语做后置定语修饰letter，故正确答案为A。
3.【答案】B。解析：考查动词辨析。句意：兼职工作同时保持同样的生活水准似乎是每个人的愿望。preserve保存;保护;manipulate操作，操纵;persist坚持;maintain保持，维持，符合句意，故正确答案为B。
4.【答案】D。解析：考查介词固定搭配。句意：“苏珊，我想和你单独谈谈。”老师说着，并让其他人离开了教室。根据老师说的话可知她想和苏珊两个人单独谈话，因此要让在教室的其他人离开教室。clear sth./sb. from sth. 清除，驱赶;clear sth. with sb. 得到某人的许可(该用法不常见);clear sth. of sth. 清除，清理;clear sb. of sth. 证明某人无罪;clear off(使)迅速离开，走开。故选D。
5.【答案】C。解析：考查非谓语动词。句意：通过点击它们你可以把发送到你Hotmail账户的附件下载到你的个人电脑上。因为句子中已经有了谓语be downloaded，所以空格处的词应该是非谓语，排除D。因为“附件”与“发送”之间是被动关系，所以选过去分词sent。
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