The weather in London is so changeable that people always take their umbrellas with themrain.
A. for fear of
B. in need of
C. in spite of
D. because of
查看答案
细菌核质的特点是
A. 有典型细胞核结构
B. 含组蛋白
C. 无核膜与核仁
D. 含两条染色体
E. DNA呈线状
以细菌的核酸、蛋白质等在组成的同源程度分类是
A. 传统分类法
B. 数值分类法
C. 现代分类法
D. 遗传学分类法
E. 生物学分类法
引起人体疟疾发怍的阶段是
A. 子孢子
B. 肝细胞内的迟发性子孢子
C. 配子体
D. 卵囊
E. 红细胞内的裂殖体
Peter received a letter just now（）his grandma would come to see him soon.
A. said
B. says
C. saying
D. to say
微信支付 
支付宝支付