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Lesson 22 模拟通话2-1

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Lesson 22 模拟通话2-2

膨胀性围岩中黏土矿物的成分主要由亲水性矿物组成。

A. 对
B. 错

膨胀性围岩同时具有吸水显著膨胀软化和失水收缩硬裂两种特性。

A. 对
B. 错

Listen and choose the right answer.[音频]The woman is asking the man to ___________.

A. donate money to a food organization.
B. cook a meal for the school.
C. play a game to help feed people.
D. translate a website into English.