单项选择题

If we had known the basic principles, we should have controlled the process even better.

A. 如果我们认识这些基本理论，我们就能更好地控制这个程序了。
B. 假如我们了解这些基本原理，我们应该早点控制这个过程。
C. 如果我们见过这些基本理论，那么我们必须更早一点控制这个程序的使用。
D. 如果我们早知道这些基本原理，我们就会更好地控制这个程序了。
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单项选择题
How popular did Goldman’s invention finally becomeA. Men and women models used shopping carts in his stores.B. Store greeters instructed customers in how to use the shopping carts.C. Some stores had to wait several years to get his shopping carts.D. His shopping carts had become so stylish that both men and women liked to use them.
At first there was a bit of difficulty getting the public to accept shopping carts. Men thought using them was effeminate(女人气的)while younger women considered the use of the shopping carts to carry products around to be somewhat unstylish. Goldman solved this problem by hiring men and women models to use shopping carts in his stores. In addition, store greeters instructed customers in how to use the shopping carts. In short order, the shopping carts became very popular because it made shopping much easier for customers. By 1940 the popularity of shopping carts had grown to such an extent that there was a 7,year waiting list in store orders for new shopping carts.
单项选择题
Why was it difficult to get the public to accept shopping carts at firstA. Both men and women were afraid they would not look good if they used them.B. People thought it unnecessary to use them because they never did much shopping.C. The early shopping carts were too difficult to use.D. Only men and women models were supposed to use such modern things.
At first there was a bit of difficulty getting the public to accept shopping carts. Men thought using them was effeminate(女人气的)while younger women considered the use of the shopping carts to carry products around to be somewhat unstylish. Goldman solved this problem by hiring men and women models to use shopping carts in his stores. In addition, store greeters instructed customers in how to use the shopping carts. In short order, the shopping carts became very popular because it made shopping much easier for customers. By 1940 the popularity of shopping carts had grown to such an extent that there was a 7,year waiting list in store orders for new shopping carts.
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