【名词&注释】
双氧水(hydrogen peroxide)、身体健康(physical health)、氢原子(hydrogen atom)、可数名词(countable nouns)、绿色氧化剂(green oxidant)
[单选题]人体中缺乏某些元素会影响身体健康，甚至引起疾病。例如导致骨骼疏松、畸形所缺的元素是
A. 锌
B. 碘
C. 钙
D. 铁
查看答案&解析
举一反三：
[单选题]28． How to Win Friends and In fluence People____．
A. influenced few people
B. was a book about how to become a best seller
C. was translated into a few languages
D. was about friendship
[单选题]16．This photo reminds me _______ the days when l worked ________ the farm with my classmates．
A. about; in
B. about; on
C. of; in
D. of; on
[单选题]水被称为“生命之源”，双氧水被称为“绿色氧化剂(green oxidant)”。下列关于它们的说法中正确的是
A. 都含有氢气
B. 都含有氢元素
C. 都含有氢分子
D. 都含有2个氢原子
[单选题]15．
A. little
B. alittle
C. few
D. afew
[单选题]Tomorrowthere'saprogrammeaboutourschoolonTV，thenit____bymillionsofpeople．
A. willsee
B. saw
C. willbeseen
D. wasseen
[单选题]BIn the 1500s，the camera was invented．
A. Even then，photography was a new field． Most families had their pictures taken by photographers．People did not own cameras because taking pictures and developing the films were too difficult．In 1884 ，George Eastman invented a kind of film．lt could be put into a small camera． The new film was easy to use． So many people began to buy cameras． When they had used up their films people returned their cameras to the factory． There，the films were developed，and pictures were made． More films were put into the cameras． And they were sent back to the owners with their pictures．
B. Photography has become a hot hobby， There are also many new jobs in this field，especially in news reporting． Newspapers，magazines，and tele-vision all need pictures to tell stories， Photographers help scientists by taking pictures through microscopes and telescopes． Deep-sea divers take pictures of ocean plants and animals． Astro-nauts take their cameras into space． Man finds new uses of the camera every day．
C. When did people find a way to make the pictures permanent?
D. In the 1500s．
E. In the 1600s．
F. In the 1700s．
G. In the 1800s．
[单选题]17．
A. something
B. anything
C. everything
D. nothing
[单选题]3． Last Sunday's football match was a great _________ ．
A. successful
B. success
C. succeed
D. successes
本文链接：https://www.zhukaozhuanjia.com/download/5r545z.html
