--- No wonder I often hear her sing in the garden.
A. had taught
B. taught
C. is teaching
D. has taught
20. Occasions are quite rare ________ I have the time to spend a day with my kids.
A. why
B. who
C. which
D. when
(二)阅读理解:
A
NASA scientists said on June 1, 2008 they had found ice on Mars -- a step towards finding evidence of life.
Sharp new images received from their Phoenix lander convinced scientists that the spacecraft's thrusters had uncovered a large patch of ice just below the Martian surface, team members said.
That bodes well for the mission's main goal of digging for ice that can be tested for evidence of organic compounds that are the chemical building blocks of life.
Washington University scientist Ray Arvidson said the spacecraft's thrusters may have blown away dirt covering the ice when the robot landed one week ago.
Scientists said a detailed image taken under the lander shows one of the craft's three legs sitting on coarse dirt and a large patch of what appears to be ice -- possibly 3 feet (0.9 metres) in diameter -- that apparently had been covered by a thin layer of dirt.
"We were worried that it may be 30-, 40-, 50-centimeters deep, which would be a lot of work. Now we are fairly certain that we can easily get down to the ice table," said Peter Smith, a University of Arizona scientist who is the chief project investigator.
【2017届英语一轮精品复习导学案:Unit2《The environment》(译林牛津版必修5)】相关文章:
★ 【人教版】2014届高考英语一轮复习指导考点针对练:必修5 unit2《The United Kingdom》
★ 2017届高考英语二轮复习大题冲关秘籍语法填空:体验真题(含解析)
★ 【人教版】2014届高考英语一轮复习指导考点针对练:选修8 unit2《Cloning》
★ (安徽专用)2014届高考英语一轮复习方案 作业手册(8)模块3 《Unit 8 Adventure》(含解析) 北师大版必修1
★ 2014届高考英语一轮复习课时作业(二十三)必修4Module 5《A Trip Along the Three Gorges》(外研版)
★ 2017届高考英语二轮复习书面表达限时测验:5(含解析)
★ 【浙江专用】2014届高考英语一轮复习课时作业(二十六)选修6Unit 1《Art》
★ 四川省2016届高考英语一轮复习课时作业(47) Module 5 The Conquest of the Universe 外研版选修8
★ 【北师大版】2014届高考英语一轮复习指导课时作业:Unit 10 B卷 Word版含解析
★ 2014届高考英语一轮复习课时作业(二)必修1Module 2《My New Teachers》(外研版)
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21