【单选题】He returned from abroad ______________ that his mother had been badly ill.
【多选题】In order to use office facilities properly, what kind of things you should do and should not do? Classify the statements A to L into the two columns based on your common sense.
A.
Enter your copier access code when using the copy machine.
B.
Put the paper wastes into the bin for recycling.
C.
Leave the door of the copy room open, when there is a meeting or people working next door.
D.
Use the meeting room (or seminar room)without booking in advance.
E.
Tidy up the meeting room and staff room after using and put everything back to where it was.
F.
Leave the words on the white board and leave the lights and the computer and other electronic facilities on when leaving the meeting room.
G.
Wash the cups, plates or forks, etc. after using in the kitchen,
【简答题】(6分)甲、乙、丙、丁是1~18号元素,乙元素原子有三个电子层,第一层与最外层电子数相等;甲元素原子的核外电子数比乙元素原子核外电子数少1;丙元素原子的最外层电子数是次外层电子数的2倍;丁元素原子核电荷数比丙元素原子核电荷数多2。请回答: (1)甲的单质与水反应的化学方程式为 ; (2)乙元素的原子结构示意图为 ; (3)丙元素的最高价氧化物可以和甲与丁两种元素形成的某种化合物反应生成丁单质,每生...
【单选题】听力原文:Why didn't they go to the restaurant at the Student Center? (7)
A.
They decided that they did not want any coffee.
B.
They thought that the Student Center would be closed.
C.
They thought that the Student Center would be crowded.
D.
The man lost his money in the vending machine.
【简答题】Quiz: A. incident B. when C. include D. flights E. informed F. carriages G. called H. serious I. stressful J. disaster K. command L .reluctantly M. confronted N. require O. easily As a physician who t...
【单选题】下列几项中,不符合 RISC 指令系统的特点是( )。
D.
选取使用频率最高的一些简单指令,以及很有用但不复杂的指令
【单选题】某元素原子的最外层电子数与次外层电子数相同,且最外层电子数与次外层电子数之和小于8,它是[ ]
【多选题】《三国演义》中塑造了一位温酒斩华雄、过五关斩六将的英雄形象关羽,美髯公关羽的传奇故事还有很多,比如:( )、( )、大意失荆州、放水淹七军、败走麦城等。
【单选题】听力原文:Why didn't you study for the test? (A) They're good students. (B) Because it was a test. (C) I was too tired to study. (18)