下列四组生物中,都属于真核生物的一组是[ ]
A.大肠杆菌和草履虫
B.SARS病毒和蘑菇
C.蓝藻和酵母菌
D.衣藻和喇叭虫
答案:D
用所给词的适当形武填空。
1. My sister is considering __________ (change) her job because of the low salary.
2. How many _______ (fall) have you seen?
3. This is an ________ (educate) book.
4. _________ (lucky) , my sister helped me with my housework.
5. After the flood, many people became ________ (home).
气压聚合法的水温要求是
A.塑料内残留单体越少B.出现散在性小气泡C.120~130℃D.使塑料聚合收缩与单体量呈正E.100.3℃