2018-2022 英语周报 高一 外研 26答案

1.C【解析】甲情况下由平衡条件得 Mosin a=mg感时况下对整体由牛顿第二定律得Mg- nisin a=(M+m)a,解得a=g(1-sina),对质量为m的物块由牛顿第二定律得T- mosin a=ma,解得T=mg,C项正确

第三节One possible versionParagraph 1Finally, afler struggling for a minute or tuo, I still gotpulled underwater. I told myself I should never give upThen I pulled the weed again with great efforts. The weedfinally broke. I swam back to the surface to take a deepbreath. I saw two young men in canoes, racing each otherI was exhausted and shouted for help. The two men saw meand raced towards me. By the time they reached me, I hadbeen already unconsciousParagraph 2When I woke up, I was in an empty room lying on abed. It was not until a doctor came into the room that I realized that I was in a hospital. Jimmy and bobby told me thetwo young men brought me to the shore and sent me to thehospital. After a few minutes, my parents with half angryand half worried faces walked in. My parents scolded mefor running out of the house secretly but were also glad thatI was not seriously injured. I will never forget that terrifyingexperience. Neither will I ever want to show off again

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