第3部分：概括大意与完成句子(第23～30题，每题1分，共8分)
下面的短文后有2项测试任务：(1)第23～26题要求从所给的6个选项中为指定段落每段选择1个最佳标题;(2)第27～30题要求从所给的6个选项中为每个句子确定1个最佳选项。
23.Paragraph 2_______________
24.Paragraph 4_______________
25.Paragraph 5_______________
26.Paragraph 6_______________
27.Doctors envision that the nanomotor would travel through human bodies to____________.
28.Surface tension means the tendency of atoms or molecules to____________.
29.Nanoconveyors could be used to____________.
30.Applying a small electric current causes atoms to____________.
第4部分：阅读理解(第31～45题，每题3分，共45分)
下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个最佳选项。
31.Harry Potter is mentioned in the passage，because scientists____________.
A.can now make an invisible cloak of the same kind as he uses
B.try to make an invisible cloak of the same kind as he uses
C.try to invent a device similar in idea to the invisible cloak he uses
D.know that it is possible to make an invisible cloak of the same kind
32.What is true of microwaves?
A.Their wavelengths are shorter than those of visible light.
B.Their wavelengths are longer than those of visible light.
C.They are different from visible light as they are a kind of radiant energy.
D.They are visible to the human eve.
33.What is NOT true of the invisibility device?
A.It is made of a special material with unusual ability.
B.Microwaves bounce off it when they strike it.
C.Microwaves pass through it when they strike it.
D.It bends the microwaves all the way around until they reach the opposite side.
34.What does the word “coaster” mean in the passage7
A.A disk OF plate placed under a drinking glass to proteet a table top.
B.A vessel engaged in coastal trade.
C.A roller coaster.
D.A resident of a coastal area.
35.Harry Potter’s invisibility cloak doesn’t have any real competition yet，because_________.
A.scientists have not found out how his cloak works
B.the cloaking device is a total failure
C.the cloaking device works only for microwaves
D.the cloaking device works only for visible fight
