[单项选择]The answer must ______ finding new sources of energy.
A. happen to
B. turn out
C. lie in
D. lay in

[单项选择]The answer must ______ finding new sources of energy.
A. happen to
B. turn out
C. lie in
D. lay in

[单项选择]Very few experts ______ with completely new answers to the world's economic problems.
A. come to
B. come round
C. come up
D. come on

[单项选择]The baby seems content; he must have （）his new nursemaid.
A. taken to
B. taken after
C. taken from
D. taken in

[单项选择]The new government must______finding solutions to the urgent economic issues．
A. setup
B. set aside
C. set off
D. set about

[单项选择]

Text 1
One of the major problems of nuclear energy is the inability of scientists to discover a safe way to dispose of the radioactive wastes which occur throughout the nuclear process. Many of these wastes remain dangerously active for tens of thousands of years, while others have a life span closer to a quarter of a million years. Various methods have been used to date, but all have revealed weaknesses, forcing scientists to continue their search.
The nuclear process involves several stages, with the danger of radioactivity constantly present. Fuel for nuclear reactors comes from uranium ore, which, when mined,, spontaneously produces radioactive substances as byproducts. This characteristic of uranium ore went undetected for a long time resulting in the death, due to cancer, of hundreds of uranium miners.
The United States attempted to bury much of its radioactive waste material in containers made of steel covered in concrete and capable of holdi
A. it produces radioactive substances after it is dug out
B. it has caused deaths of many miners
C. the mining of it produces dangerous by-products
D. there is a problem in mining techniques

[单项选择]New vehicles must ______ with certain standards for environmental protection.
A. apply
B. comply
C. imply
D. supply

[单项选择]More probably he had tapped a fresh source of energy in himself—the power of love—which made him feel______.
A. invaluable
B. invincible
C. invariable
D. invisible

[单项选择]Under a new law, universities must ______ smoke-free policies on their campuses.
A. endow
B. endeavor
C. enact
D. endorse

[单项选择]You must try your best to ______ to the new environment.
A. adopt
B. adapt
C. adjust
D. affect