先通读下面的短文，掌握其大意，然后从A、B、C、D四个选项中选择可以填入空白处的最佳答案。

Dear Anna，

    How's your summer vacation going? I am having fun in Shanghai，China．I am sitting in a1now．It is big and there are about 50 tables in it．I am2some tofu and a small bowl of mutton noodles3carrots．I'm also drinking some red tea．I will450 yuan for the meal(餐)．The dumplings here look good ,and I will eat 5next time．

    The food here is very good. The noodles and the tofu are6, and the vegetables are fresh(新鲜的)，7the tea isn't very good．

    The people in the restaurant use chopsticks(筷子)to have meals．I8use them and I am learning9to use them．It is very interesting．I think it will take me a long time to10the meal．

    I will go back to New York next week．See you soon．

    Yours，

    Sally

内燃机一个工作循环有吸气、压缩、做功、排气四个冲程，实现将内能转化为机械能的是____冲程．发动机运行前必须加润滑油，是为了____．某品牌汽车运行100km耗油8kg，这些汽油完全燃烧要放出____  J的热量．（汽油的热值q=4.6×10⁷J/kg）

看拼音，写汉字。

cán  sāng              zhòu  yè            gēng  yún

____                   ____         ____   

bái  lù               biān  sài              zhú  lì

____                  ____         ____