问题补充：
The number of new energy vehicles in China’s cities to reach 39,000 by the end of this month, according to Wan Gang, Chinese Minister of Science and Technology.
A. are expected
B. is expecting
C. are expecting
D. is expected
答案：
A. are expected
B. is expecting
C. are expecting
(答案→)D. is expected
解析：考查主谓一致和语态：句意：根据中国科技部长王刚说：中国城市的汽车数量到这个月底有望达到39000。主语是the number of new energy vehicles谓语是单数，排除AC，而且汽车的数量是被估计…，用被动式，选D。
