人教版七年级下册英语 unit 9 测试卷
just like Larry's, and my height is just like Steve's. Now do you know what I look like? ( )26. Henry is
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just like Larry's, and my height is just like Steve's. Now do you know what I look like? ( )26. Henry is
图甲所 示的加速度a=0.5 m/s2的匀加速运动,则 at2=x,代入x=100 m有t=20 s.但实际位移为S=>100 m,D项错. 答案:BC 1.此类题应用矢量合成与分解的方法,因为速度是矢量,在合成和分解时,采
urce: Consumer Panel -Y2002By Type of S. SauceBy Package of S. Sauce 15. 消费者的购买行为—上海 每个家庭平均每年消费7.3L,34RMB的酱油
a weast?. Training &Development ,46-49 Fletcher, S. (1992). NVOS, Standards and Competence: A PracticeGuide
toothache. 3. Whose hat is it? A. Jenny’s. B. Stella’s. C. Cindy’s. 4. How often does Kelly do sports? A
a weast?. Training &Development ,46-49 Fletcher, S. (1992). NVOS, Standards and Competence: A PracticeGuide
即x∈A且x∈B 或 x∈A且x∈C (6分) 也即x∈A且x∈B∪C,即x∈S,所以TÍS. (7分) 因此T=S. (8分) 另,可以用恒等式替换的方法证明. 本文档由香当网(https://www.xiangdang
have to pay for their prescription at the chemist's.[答案]T [试题]In Britain people usually have a doctor
m/s,到达坡底时小球的速度达到40 m/s. (1)求小球的速度v(m/s)与时间t(s)之间的函数关系式; (2)求t的取值范围; (3)求3.5 s时小球的速度; (4)求t(s)时小球的速度为16 m/s. 本文档由香当网(https://www
)5. This is apple. It’s big apple. apple is Mike’s. A、an; a ; the B、a; an ; the C、the; a ; an ( )6
已知a=5.0×105m/s2,t0=1.6×10-3s, ∴at0=800m/s. 所以枪弹射出枪口时的瞬时速度为800m/s. 17.在曲线y=f(x)=x2+3的图象上取一点P(1,4)及附近一点(1+Δx
数解系式. 2.已知第一象限内的动点P(x,y),且x+y=8,点A(6,0),设△AOP的面积为S. (1)用含x 的解析式表示S,写出x的取值范围. (2)当点P的横坐标为5时,△OPA的面积是多少
),得x∈A且xÏB,则得xÏB∪C, (6分) 即得x∈A且xÏB∪C,即x∈S, 所以TÍS. (7分) 因此T=S. (8分) 本文档由香当网(https://www.xiangdang.net)用户上传
Jane’s dress is similar in design_________her sister’s. [答案]A.to She has two best friends._________of them
there by subway. He’s going to have lunch in McDonald’s. In the afternoon, he is going to play football with
wallet lying on ____ ground. ____ wallet was Mr. Black’s. 21. We have no classes in ____ afternoon on ____
ÏC,则得x∈B -C, (6分) 即得x∈A Ç( B - C ),即x∈S,所以TÍS. (7分) 因此T=S. (8分) 另,可以用恒等式替换的方法证明. 本文档由香当网(https://www.xiangdang
某质点的位移s(单位:m)与时间t(单位:s)之间的关系为s(t)=t-(2t-1)2,则在1 s末的瞬时速度为 m/s. 8.函数y=x在x=x0处的导数为 ,在点 处的导数为12. 9.某辆汽车的位移s和时间t之间的函数图象如图所示
55 kilograms. C.Size 38. ( )2.A.Li Ming. B.Li Ming’s. C.52kg. ( )3.A.I cleaned my room. B.He stayed at
4. - Would you please tell me ? -It's Mr. Black's. A. when the robot was bought B. who the robot belongs