Question

　　  First the population is increased, and more gas　　　　　　　　  1.——

and other fuels are used. Second, the United States　　　　　　　　     2.——

is not completely developing all it energy sources. For　　　　　　      3.——

example, the use of coal has been limited because of　　　　　　　　   4.——

coal burning causes pollution. The third reason for

the energy problem is American's dependence in oil　　　　　　　　　　 5.——

from other countries. If these countries refuses to sell its　　　　  　　   6.——

oil, all Americans feel the effects. But probably the most

important reason for the energy problem is which　　　　　　　　　　  7.——

the United States has no acceptable alternative　　　　　　　　　　    8.——

sources of energy. Both solar power and nuclear power

are possibilities, but solar power is not complete　　　　　　　　　　  9.——

developed yet, because many people feel that nuclear　　　　　　　　   10.——

power is dangerous.

 

Answer 1

答案：
解析：

1．increased→increasing   人口的增加，不能用被動(dòng)語態(tài)，所以把increased 改為increasing。 2．are used→are being used  正在被使用，這里需要用現(xiàn)在進(jìn)行時(shí)態(tài)的被動(dòng)語態(tài)。 3．it→its                 物主代詞修飾energy sources.所以改為its 4．because of→because     后面接的是句子，所以要用because, 若是短語，我們會(huì)用because of. 5．in→on                dependence后面的介詞是on, 固定搭配。 6．its→their              前面用的是these countries, 所以后面要把its改為their。 7．which→that            表語從句，用that引導(dǎo)。 8．   9．complete→completely    這里我們需要一個(gè)副詞來修飾developed, 所以將complete改為completely. 10．because→and          上下文意思提示這里不是表示因果關(guān)系的句子，是并列句，所以將because改為and.