. She feeds the baby _____ milk and grass _______her cattle. A .on; t o B. to; on C. with; to D. on; with
已知运动物体所受的合力情况,对合力做功和动能变化的关系分析正确的是 ( ) A.如果物体所受的合力为零,那么,合力对物体做的功一定为
从甲、乙等10名同学中挑选4名参加某项公益活动,要求甲、乙中至少有1人参加,则不同的挑选方法共有(A)70种
—Do you think the _______ of this skirt suits me? —Of course! You always look beautiful in red. A. size B. design
下列离子方程式中,书写正确的是( ) A.铁和稀硝酸反应:Fe + 2H+ = H 2↑+ Fe 2+ B.向AlCl3溶液中加入过量的氨水反应:Al3+ + 3NH3·H2O = Al(OH)3
下列生物中属于生产者的是( ) A.青菜 B.金鱼 C.细菌 D.蘑菇
Can you imagine what a girl will look like she comes across a rat in her room? A. now that B. though C . in case D. if
在函数(a为常数)的图象上有三个点,,,则函数值、、的大小关系是( ) A.<< B.<< C.<< D.<<