That’s the most _____________ coincidence (巧合) I’ve ever heard of!
A. incredible
B. credible
C. credit
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We should get a thorough understanding of the cultural ______ of the United States.
A. diverse
B. diversify
C. diversity
To give a _______ of a word is more difficult than to give an illustration (例证) of its use.
A. definite
B. definitely
C. definition
中性粒细胞的嗜天青颗粒内含有
A. 碱性磷酸酶
B. 吞噬素和溶菌酶
C. 芳基硫酸酯酶
D. 组胺酶
E. 酸性磷酸酶和髓过氧化物酶
关于成熟红细胞描述错误的是
A. 无细胞器
B. 胞质中充满血红蛋白
C. 细胞呈双凸圆盘状
D. 细胞膜上有A和B血型抗原
E. 向全身的组织和细胞供给氧气,带走二氧化碳