Why do people like to wear T-shirts so much today？
A. T-shirts are suitable for home wear.
B. T-shirts are smart and comfortable.
C. T-shirts go well with trousers.
D. T-shirts feel soft and wash well.
查看答案
【42】
A. will be
B. appear
C. are
D. is
【41】
A. tries
B. continues
C. wants
D. decides
What kind of T-shirt is the most popular one？
A. The silk T-shirt in white color.
B. The nylon T-shirt worn on the playground.
C. The wool T-shirt worn for work.
D. The cotton T-shirt with a slogan or a picture.
若有如下二叉树，则对此二叉树前序遍历的结果为()。
A. XZCYAB
B. XYZABC
C. XYABCZ
D. XYAZBC
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