Đáp án:
B1: a,c,d
B2: a,x=5; b,x=-4; c,x=4; d,x=-1
B3: a,x=3; b,x=5; c,x=12; d,x=8; e,x=7; f,x=0
Giải thích các bước giải:
B1: a,c,d B2: a,x =5; b,x=-4; c,x=4; d,x=-1 B3: a,x=3; b,x=5; c,x=12; d,x=8; e,x=7; f,x=0
II/ Choose the correct answer to fill in the blank(2.5 marks) 1.______________I didn’t like the film, everybody else seemed to enjoy it. A. Despite B. Although C. However D .Nevertheless 2. I was ______________to hear he’s 60. He looks much younger. A. surprised B. surprising C. bored D. boring 3. On the way to school, I can see ‘ ___________________’sign. A. left turn no B. turn no left C. no left turn D. left no turn 4. What games did you ______________________when you were 8 years old? A. used to play B. use to play C. use play D. use play to 5. A film that tries to make audiences laugh. It’s a______________ A. romantic B. thriller C. action D. comedy 6. Pedestrians should be__________________ when crossing the roads. A.careful B.carefully C. careless D. carelessly 7. ________________is a hilarious film. I was laughing from beginning to end. A. “Crazy Coconut” B. “Titanic” C. “Mr Bean’s holiday” D. “Big Ben Down” 8. Don’t drive if you feel tired or _____________ you drink alcohol. A. after B. before C. as D. so 9. Sit down. I’ve got some very _____________news for you. A. exciting B. excited C. tiring D. tired 10. My father __________the bus to work every day, but I cycle. A. catches B. drives C. goes D. runs
Một vật nhỏ có thể chuyển động ko ma sát trên mp nằm ngang đc gắn với 1 lò xo có độ cứng 80 N/m, lò xo có khối lượng không đáng kể. Người ta nén lò xo 2cm rồi thả nhẹ tay. Biết khối lượng quả nặng 200g. Vận tốc của vật khi lò xo giãn 1cm ?
điền vào những câu sau bằng ác từ sau đây is the coldest the most exciting the most expensive the most beautifuk the most popular the most peacful is the hottest is the longest is the longest is the largest
Khi đột cháy hoàn toàn một ankin thì sản phẩm thu được A. Số mol nước bằng số mol cacbonic B. Số mol nước lớn hơn số mol cacbonic C. Số mol nước nhỏ hơn số mol cacbonic D. Số mol cacbonic lớn hơn số mol nước
Giúp mik những chỗ còn trống với
Give the correct form of the word given to complete the sentence. 1. There aren’t any vegetables and fruits ____. We should go to the supermarket and buy them (LEAVE) 2. It was so_____ when I tried eating sticky rice at the first time. (TASTE) 3. My Grandma is cooking sweet soup_____, so I can't wait to enjoy it. (FRAGRANT) 4. Viet Nam cuisine has a___ of unique foods from different areas. (VARIABLE) 5. I like Pho very much. Its broth is made by_____ chicken bones or bones of cows (STEW) 6. The soup had a very __________ taste. (SALT) 7. She covered the cake with a _____________ of sugar and whites of eggs. (MIX) 8. Most children enjoy eating ________ chicken and French fries. (FRY) 9. The pineapple was sweet and ______________. (JUICE) 10. Meats and fish are ______________ used in all Vietnamese cooking. (COMMON)
Rewrite the sentences, using the given words. 1. Tim is better at English than Susan. → Susan isn’t_________________________________________________ 2. We spent five hours getting to London. → It took _____________________________________________________ 3. Listening to music gives him pleasure. → He enjoys _______________________________________________ 4. She is more beautiful than her younger sister. → Her ____________________________________________________ 5. They began studying English in 2004. → They ___________________________________________________ 6. You ought to go to school now. → It’s time ________________________________________________ 7. My father works as a teacher at a high school. → My ____________________________________________________ 8. We can’t afford to buy the car. → The car is _______________________________________________ 9. People say that he beats his wife. → He is said to _____________________________________________ 10. She bought that house in 1990. → She has _________________________________________________
Rút gọn biểu thức sau : $\frac{2}{3}$$\sqrt{6}$ + 2$\sqrt{\frac{2}{3}}$ - 4$\sqrt{\frac{3}{2}}$
Giup mk bai nay Ko lm linh tinh đê lây điem
Nhờ giải dùm em chứ mai em nộp bài rồi Giải đúng em cho 5 sao
Loga.vn - Cộng Đồng Luyện Thi Trực Tuyến