2022七上阳光英语周报答案

4.A【解析】因为AD=AB BC Cb,所以AD=(a 2b) (3a-b) (2a-b)=2(3a-b),因为BC=a-b,a,b是不共线的非零向量,所以AD∥BC且AD|≠BC|,所以四边形ABCD是梯形.故选A

mask my weariness, and requested him the same thinUnexpectedly, he took out his mobile phone for me withouthesitation or any probing questions. Dancing in his eyeswas the real kindness that I had been struggling to seek forso long. From that day on, I began helping other strangersin distress, just like the poor-looking but kind man, withthe aim of passing kindness and melting the ice in manypeople’ s hearts第三节One possible versionParagraph 1At that point I saw a young mother with her ttto kids. Ithought that a beautiful woman with charming blue eyesmust be willing to help me. So, with great expectation, Itrotted briskly towards her with an appropriate smile on myface,and requested courteously if she could be kind enoughto make a phone call for me. However, what I saw was awoman's face disfigured by frowns and what I heard was a.sound of dismay and suspicion under her breath. Without aword, she pulled her kids to escape from me, as if scareda murderer. I stood there, motionless, with a blank faceand a sinnking heartParagraph 2Finally a man tearing a cheap T-shirt and dirty jeaneseemed to notice me. I squeezed a smile though it failed to

以上就是2022七上阳光英语周报答案，更多英语周报答案请关注本网站。