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【简答题】
In 1945, Reuben, a 12yearold boy, saw something in a shop window that set his heart racing. The price—five dollars—was beyond his means, but he went inside the shop anyway. Standing proud and straight in his flour sack(面粉袋)shirt and washed out trousers, he asked the shopkeeper to hold it for him for some time. “Ill try,”the shopkeeper smiled. Reuben decided to raise the five dollars. Hearing the sound of hammering from a side street, he suddenly had an idea. People built their own homes in Bay Roberts, using nails purchased in sacks from a local factory. The sacks were sometimes discarded and Reuben knew he could sell them back to the factory for five cents a piece. Every day after school, Reuben went around the town, collecting nail sacks. When the school closed for the summer, Reuben wandered around the town, searching for his treasures. Often he was tired and hungry, but the thought of the object in the shop window kept him going. Sometimes his mother Dora would ask:“Reuben, where were you? We were waiting for you to have dinner.” “Playing, Mum. Sorry.” Dora would look at his face and shake her head. Boys. One day in spring, he counted the coins and found that he needed 20 cents more.Could there be any sacks left anywhere in town? He had to find four and sell them before the day ended. When Reuben arrived at the factory in the late afternoon, the sack buyer was about to lock up.“Mister! Please don’t close up yet.”The man turned and saw Reuben, dirty and sweat stained. With four more coins in his pocket, Reuben headed for the shop and got what he wanted. Racing home, he burst through the front door.“Here, Mum! Here!”He exclaimed as he ran to her side. He placed a small box in her work roughened hand. Dora unwrapped it carefully, to save the paper. A blue velvet jewel box appeared. She lifted the lid and saw an almond shaped brooch (胸针) with the word“Mother.” It was Mothers Day, 1946. Dora had no jewels except her wedding ring. Speechless, she smiled radiantly and gathered her son into her arms. (1). The boy was excited because he saw in the shop window something he wanted for . (A). himself (B). his brother (C). his father (D). his mother (2). The way Reubens clothes are described shows that he was from . (A). a rich family (B). a poor family (C). a middle class family (D). a divorced family (3). The word“Boys”(para. 5) implies that . (A). boys are like that (B). boys often tell lies (C). the mother was angry (D). the mother disbelieved Reuben (4). The word“treasures”(line 3,para. 3) refers to . (A). coins (B). sacks (C). rings (D). brooches (5). The passage is mainly about . (A). a loving boy (B). a tolerant mother (C). a kind sack buyer (D). a generous shopkeeper
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【判断题】公交车辆使用的ABS是气压式ABS。
A.
正确
B.
错误
【单选题】在按照汽车ABS的系统控制方案划分,汽车ABS有()。
A.
轴控式ABS、轮控式ABS和混合式ABS
B.
以车轮角减速度为控制的参数的ABS和以车轮滑移率为控制参数的ABS
C.
单通道式ABS和双通道式ABS
D.
四通道式ABS和三通道式ABS
【单选题】Translocations cause some of the most recognized genetic syndromes in human offspring. A translocation can be best described by which one of the following?
A.
They always produce cancer.
B.
They always produce mental retardation.
C.
They have to involve the exchange of an entire chromosome.
D.
They can only occur in the presence of reverse transcriptase.
E.
They can occur in somatic or stem cells.
【单选题】( )是神经系统的结构和功能单位。
A.
神经元
B.
树突
C.
轴突
D.
细胞体
【判断题】神经胶质细胞是神经系统的结构和功能单位。
A.
正确
B.
错误
【单选题】Which of the following statements regarding the mechanism of transformation in Bacillus subtilis is false?
A.
A competent bacteria contains a DNA receptor/translocation complex
B.
While translocation of exogenous DNA, both strands gets passage into the cell
C.
While translocation of exogenous DNA, only one strand gets passage into the cell
D.
The exogenous DNA recombines and incorporates itself in the chromosome of the recipient cell.
【单选题】Approximately _____ of the gametes produced by an individual heterozygous for a translocation will be nonviable.
A.
all
B.
half
C.
none
D.
a quarter
E.
an eighth
【单选题】( )就是神经细胞,是神经系统的结构和功能单位。
A.
反射弧
B.
神经元
C.
轴突
D.
胞体
【单选题】设函数厂(x)定义在[a,b]上,正确的是( ).
A.
f(x)可导,则f(x)连续
B.
f(x)不可导,则f(x)不连续
C.
f(x)连续,则f(x)可导
D.
f(x)不连续,则f(x)可导
【单选题】The simplest form of ABS is the ______.
A.
single track ABS
B.
double track ABS
C.
automatic ABS
D.
moblie ABS
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