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【单选题】
按风化因素的不同,可分为( )三个类型。 1.物理风化 2.化学风化 3.生物风化 4.风蚀作用 5.侧蚀作用A.
1、2、3
B.
2、3、4
C.
3、4、5
D.
1、4、5
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举一反三
【简答题】“事父母能竭其力,事君能致其身”出自()。
【单选题】Which of the following statements is NOT mentioned in the passage?
A.
It is generally believed that the year 1500 can be set as the beginnIng of the modem English language.
B.
Other languages had great influence on the English language at different stages of its development.
C.
The English language has beech and still in a state of relatively constant change.
D.
Many classes Or groups have contributed to the development of the English language.
【简答题】表示绕x轴旋转90度的四元数的值为: , ? 提示: 。