An assistant in a bookshop should come up to help you______.
A. as soon as you have entered a shop
B. just before you finish browsing
C. only when you have finished browsing
D. when he leads you to a particular section.
You may spend too much time in a bookshop because _____.
A. the dust jackets are very attractive
B. you start reading one of the books
C. it is raining outside
D. you have to make sure you can't buy a dull book as a present
“征免性质”栏应填（）。
A. 进料加工
B. 来料加工
C. 全免
D. 外资企业
Which of the following titles best reflects the main focus of the passage？
A Survey of Three Mexican American Families at Work in Texas.
B. Innovative Career Women: Effects on Family Unity.
Changes in the life styles of Migrant Mexican American Families.
D. Farming of Family; The Unavoidable Choice for Migrant Farm Workers.
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