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phamtuoanh10d1
2 năm trước
Một con ngựa kéo một cái xe với một lực không đổi bằng 80N và đi được 4,5km trong nửa giờ. Tính công suất trung bình của con ngựa.
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1)they shouted and looked at me when i broke the vase A angry B angrier C angrily D anger 2)he is tired he stayed up late watching tv A so B because C but D and 3)we are talking about the preservation of resources A natural B naturally C nature D naturalize 4)is he really that you can't come there? A disappoint B disappointed C disappointing D to disappointing 5)it is our policy to forest and increase forestation A protect B protecting C to protect D protected 6)i suggest to the movies A go b to go C going D went 7)they made their living by fish in the ocean every day A catch B catching C to catch D caught 8)i will be if she manages to sell that motorbike at a high price A surprise B surprised C surprising D to surprise 9)if you know where she lives please let me A know B knew C known D to know 10)if you live in this small town you earn much money A aren't B couldn't C can't D didn't 11)unless you understand i explain it again to you A am B was C will D would 12)if he a student he will get a discount A is B was C were D will be 13)because plastic bags are very hard to they will cause pollution A dissolve B wrap C tear D collect 14)these materials can be into other packaging products A reused B reduced C removed D recycled 15)if people public transport there will be less pollution A use B will use C can use D used 16)minh's english is excellent he speaks A perfectly english B english perfectly C in perfect english D english perfect 17)if you go doing that you'll end in serious trouble A up/with B on/up C off/with D out/up 18)crops are sprayed with to kill insects A fertilizer B manune C dung D pesticide 19)what about used paper bottles and cans every day? A collect B collecting C to collect D to collecting 20)if the sea water continue to be polluted many fish species extinct A became B will become C would become D become

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