题目内容

化学自热着火是指在常温常压下,可燃物不需要外界加热,而是依靠特定条件下自身的反应放出的热量引起的着火,对其控制不需要结合以下()的特点。

A. 在储存过程中,散热条件不好,通风不良,氧化放出的热量散不出去;堆积内积热不散,促使温度上升,反应加快,当温度达到可燃物的自燃点时,可燃物就会着火
B. 与水作用化学自热着火,与水反应放出氢气、磷化氢、甲烷、乙炔等可燃气体和大量的化学反应热。可燃气体在局部的高温环境里与空气中的氧发生化学反应而着火
C. 与空气接触化学自然着火、黄磷、烷基铝,有机过氧化物等物质,能与空气中的氧发生化学反应而着火
D. 相互接触化学自然着火,相互接触化学自热着火的物质,一般情况下是强氧化剂和强还原剂混合后,由于强烈的氧化还原反应而着火

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【B5】

A. project
B. plan
C. promise
D. propose

听力原文：W: Sir, I waited ten minutes at the table before the waiter served me.
M: Sorry, Ma'am. It has been very busy tonight.
Q: Where does the conversation most probably take place？
(14)

A. In a bank.
B. In an office.
C. In the hospital.
D. In the restaurant.

Part A
Directions: You will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer ― A, B, C or D, and mark it in your test booklet. You will have 15 seconds to answer the question and you will hear each dialogue ONLY ONCE.
听力原文：W: This red shirt is $ 20.00, and the blue one is a dollar more.
M: The black one is twice as much as the blue one.
How much is the black shirt？

A. $20.00.
B. $21.00.
C. $42.00.
D. $10.00.

数字推理
给你一个数列，但其中缺少一项，要求你仔细观察数列的排列规律，然后从四个供选择的选项中选择你认为最合理的一项，来填补空缺项，使之符合原数列的排列规律。
-2，-4，0，16，()

A. 25
B. 32
C. 50
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