2017年12月真题33. ______ you are a first time buyer or not, we will offer you a good price today.
A. Whatever
B. Whenever
C. Whether
D. However
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2018年6月真题28.she has been working in China for only two years, she speaks fluent Chinese.
A. When
B. If
C. Although
D. Until
一二三四声调分别是哪个调类？
A. 阴平、阳平、上声、去声
B. 阴平、阳平、去声、上声
第二声的调类是去声，调值是51，对吗？
A. 对
B. 错
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