As mentioned in Paragraph 3, tobacco companies in the U. S. began marketing______ in the 1970s.
A. high-class cigarettes
B. low-class cigarettes
C. light cigarettes
D. low tar brands
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听力原文：What's the date today？
(12)
A. It's Thursday.
B. It's April 15.
C. In the evening today.
What is the main idea of the passage？
A. The typical process of Yoga.
B. The medical benefits of Yoga.
C. The best way to do Yoga.
D. The relationship between health and Yoga.
Castle Rock is situated in
A. Scotland.
B. England.
C. Ireland.
D. Wales.
A．laterB．formerC．latterD．earlier
A. later
B. former
C. latter
D. earlier
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