Question

     One of the most historic and significant landmarks in the United States is the San Francisco cable car system. It 1. (run) by the San rancisco Municipal Transportation Agency. The system dates back to 1878. 2. the California Street line first opened. In all,there are three lines 3. (current) operating in the city. There used to be 23 lines in use throughout the city 4. (connect) the diverse communities that make up San Francisco.

     Initially,the simple reason cable cars were used in the city 5. (be) because of its landscape.San Francisco is very hilly,which makes 6.impossible for buses to climb. The solution for this problem was the cable car.

     There are two types of cars today. Single-ended cars and double-ended cars. The single-ended cars have open-sided sections. These cars seat 29 passengers. They travel in both 7. (direction) by using a turntable that turns the car at the end of the line. The double-ended cars are a bit 8.(large) , and can hold up to 68 passengers. It has 34 seats,and grips(把手) for 9. (addition) 34 standing passengers. People who ride the San Francisco cable cars are stepping into part 10.California’s history.

Answer 1

1. is nm。考查一般现在时的被动语.态。It与run (管理) 之间是被动关系，且此处陈述客观事实，故填is run.

2. when。考查关系词。设空处引导非 限制性定语从句修饰1878.且在从 句中作时间状语，故填when。

3. currently。考查副词。设空处修饰 operating ,故填currently。

4. connecting。考查动词-ing形式作定 语的用法。lines与connect之间是逻 辑上的主谓关系，故填connecting。

5. was。考查一般过去时。由Initially可知，be表示过去某一时间存在的状态，且主语是reason ,故填was。

6. it。考查it的用法。设空处作形式宾 语，真实宾语是fdr buses to climb ,故 填it。

7. directions。考查名词。both后需跟 名词的复数形式，故填directions。

S.larger。考查形容词的比较级。由前 文中的29 passengers和本句中的68 passengers可知，此处应填比较级 larger 。

9. additional,考查形容词作定语的用 法。设空处修饰34 standing passengers ,故填 additional (另外的) 。

10. of。考査介词。part of...意为“的一部分”。