15．A.home B．tired

　　C．out D．asleep

　　解析：选D　be asleep表示"睡觉"的状态，由上文"go to bed in the evening"得出此答案。

　　16．A.use B．rather

　　C．feel like D．like

　　解析：选D　would like to do sth."愿意做某事"，而C项feel like的后面要接doing。

　　17．A.to do B．doing

　　C．do D．wash

　　解析：选C　have sth./sb. do sth."让某人/某物做某事"。

　　18．A.work B．bed

　　C．need D．house

　　解析：选B　be in bed"在睡觉"，为固定词组。

　　19．A.to do B．doing

　　C．done D．do

　　解析：选C　此句中的it指housework，故而用done，表示被动。

　　20．A.choice B．practice

　　C．idea D．quality

　　解析：选A　a matter of choice"选择之事"。

　　Ⅱ.阅读理解

　　When you actually think that humans evolved from apes, it's very clear just how different we actually look from our ancient ancestors. Even compared to the earliest Homo sapiens (智人), we look much, much different.

　　So, it would be foolish of us to assume that the human species is all done evolving and that humans will look the way they do now forever!

　　Artist Nickolay Lamm partnered with a Dr.Alan Kwan, a computational geneticist, to come up with an idea of what humans could look like 20,000, 60,000, and 100,000 years in the future.They put their heads together and came up with some (literally) eye­popping digital renderings.

Dr.Kwan based his ideas about the humans of the future's looks by predicting what their living environments might be like, and researching how humans have evolved over the last 500 to 700 years.He believes that humans might have a larger forehead because our