制备纳米粒的材料（）。 A．聚维酮 B．氰基丙烯酸异丁酯 C．聚乳酸 D．磷脂
题型：单项选择题
问题：
制备纳米粒的材料（）。
A．聚维酮
B．氰基丙烯酸异丁酯
C．聚乳酸
D．磷脂
E．醋酸纤维素
题型：单项选择题
| 阅读理解。 | |||
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| 1. If Chen Huan is free only on the evening of May 21, he can enjoy ______. | |||
| A. opera classic B. Spanish ballet C. Haydn's Trumpet Concerto D. Mozart's Flute Concerto | |||
| 2. Mr Johnson likes Spanish ballet very much, so he can go to ______ to see it. | |||
| A. Tianqiao Theater B. National Theater C. Chaoyang Theater D. Poly Theater | |||
| 3. Jane wants to buy a ticket to enjoy a traditional Chinese opera, so she should call ______. | |||
| A. 8315-8116 B. 6506-8116 C. 6500-1188 D. 8315-6300 | |||
| 4. The wonderful concert is held in Poly Theater at _________ | |||
| A. 30 Beiweilu, Xuanwu District B. 36 Dongsanhuan Beilu, Chaoyang District C. 14 Dongsanhuan Beilu, Dongcheng District D. 14 Dongzhimen Nandajie, Dongcheng District | |||
| 5. You can enjoy all the entertainment in the city of ______. | |||
| A. Shanghai B. Tianjin C. Beijing D. Nanjing |
District
onderful concert