Tough as the task was, we（）finish it ahead of time and therefore we were highly praised for it.
A. would
B. had to
C. were able to
D. must
总胆固醇增高不会出现在
A. 糖尿病
B. 肾病综合征
C. 甲状腺功能减退
D. 胆总管阻塞
E. 甲状腺功能亢进
组成一个运算器需要多个部件，但 (3) 不是组成运算器的部件。
A. 状态寄存器
B. 数据总线
C. ALU
D. 地址寄存器
Every camera we sell comes with a two-year（）
A. guarantee
B. safety
C. confirmation
D. conservation
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