下面用创始人名字命名的汽车公司有（）。
A.福特
B.克莱斯勒
C.大众
D.奔驰
参考答案：A, B, D
惠农信用卡在提供足额抵押、质押的条件下，授信额度最高可达（）万元。
A.10
B.30
C.50
D.100
Electronic computers (), the complicated mathematical operations, such as weather forecast and the control of satellites, can be done quickly and accurately.
A. being used
B. used
C. having been used
D. to be used
