题型:完形填空 完形填空。 The Taj Mahal is India's most famous building. It is known 1 the eighth wonder of the world. It also 2 a great love story. In the year 1607, Emperor Shah Jahan of India 3 a girl in a market. She was so beautiful 4 he fell in love with her at once. The girl's name was Mumtaz Mahal. Five years later, Mumtaz and Shah Jehan got married. They had 14 children. 5 Mumtaz died in 1630.Shah Jahan missed his wife so much that in 1638, he ordered the building of 6 beautiful mausoleum (陵墓) on earth for her, the Taj Mahal. It 7 22,000 workmen 22 years to finish. The beautiful white marble (大理石) building stands besidethe Yamuna River. It has expensive stones 8 its walls. By the way, to visit the Taj Mahal, you'll have totake off your shoes and leave them at the front door. ( )1. A. as ( )2. A. speaks ( )3. A. sees ( )4. A. if ( )5. A. And ( )6. A. the more ( )7. A. took ( )8. A. in B. for B. tells B. seeing B. that B. But B. the most B. takes B. on C. to C. says C. saw C. as C. Or C. much C. taking C. with D. at D. talks D. seen D. while D. So D. quite D. take D. at 查看答案
题型:单项选择题 关于受激辐射的特点叙述错误的是()A.自发产生的B.不是自发产生的C.需要有外来光子的刺激才会发生D.辐射出的光子与诱发光子特征完全相同E.外来光子的能量必须满足前后两个能级之差 查看答案