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问题 单项选择题

在V型柴油机中同一曲柄销上的两个气缸的中心线不在同一平面内的连杆是（）。

A、并列连杆

B、叉开连杆

C、主副连杆

D、B和C

答案

参考答案：A

写作题
书面表达。
     根据中文提示和英文内容，写出意思连贯、符合逻辑、不少于60词的短文。
     假如你是一所国际学校校办英文杂志的学生编辑。你看了下面这封信后，想写一篇关于该信的读后感，内容要点包括：你对此事件的看法；解释你的理由 并提出你的建议；向受害者表达尽快康复的祝愿。 （注意：1. 不能出现真实姓名和学校名称。2. 可以参照阅读材料的内容，但不得直接引用原文中
的句子）
Dear editor,
     I'm writing to tell you about food safety. Several days ago,my neighbor family ate something bad
from the market. After the meal,they had stomachaches and brought up what they had eaten. Fortunately,
another neighbor passed by and saw the accident and immediately called the ambulance (救护车). It
carried them quickly to hospital. After several hours, they were saved.
     From this all of us have realized the importance of food safety. And I do hope the whole society shall
begin doing something to protect people's life safety.
                                                                                                                                   Yours,
                                                                                                                                   Li Hua
      ____________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
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单项选择题

一条环形赛道前半段为上坡，后段为下坡，上坡和下坡的长度相等，两辆车同时从赛道起点出发同向行驶，其中A车上、下坡时速相等，而B车上坡时速比A车慢20%，下坡时速比A车快20%，问A车跑到第几圈时两车再次齐头并进（）

A．23

B．22

C．24

D．25
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