[填空题]New tree seedlings will not survive to reach the canopy level unless ______.

[填空题]New tree seedlings will not survive to reach the canopy level unless ______.

[单项选择]If you want to reach New York in time for the meeting, you have no choice but to go by air.
A. 如果你想按时到纽约参加会议，除了坐飞机以外别无选择。
B. 如果你想到达纽约去开会，就没有选择，但是可以坐飞机。
C. 如果你想按时去纽约开会，你别无选择，只能从空中去。
D. 你别无选择，只能坐飞机去纽约开会。

[填空题]reach

[单项选择]If we（）early tomorrow morning, we will reach the coast before dark.
A. take off
B. set off
C. set up
D. take up

[填空题]

A．speak
B．reach
C．cheat
D．bread

[单项选择]

An experiment that some hoped would reveal a new class of subatomic particles, and perhaps even point to clues about why the universe exists at all, has instead produced a first round of results that are mysteriously inconclusive.
Dr. Conrad and William C. Louis presented their initial findings in a talk yesterday at the Fermi National Accelerator Laboratory where the experiment is being performed.
The goal was to confirm or refute observations made in the 1990s in a Los Alamos experiment that observed transformations in the evanescent but bountiful particles known as neutrinos(微中子). Neutrinos have no electrical charge and almost no mass, but there are so many of them that they could collectively outweigh all the stars in the universe.
The new experiment has attracted wide interest. That reflected in part the hope of finding cracks in the Standard Model, which encapsulates physicists’ current knowledge about fundamental particles and forces.

A. a new class of subatoms.
B. new subatomic particles.
C. new characters of neutrinos.
D. none of the above.

[单项选择]Which of the following is NOT true about the new capital according to the report
A. It’s in the center area of South Korea.
B. It has excellent transport and environmental conditions.
C. The relocation will cost $94 million.
D. It is not named yet.

[填空题]

A. few
B. new
C. sew
D. knew