常温下，0.1mol/L的氨水pH＝11，下列叙述错误的是 A．向该溶液中加水稀释：c(OH—)/c(NH3·H2O )增大 B．0.lmol/L氨水与0.lmol/LH2SO4溶液等体积混合后所得溶液中
It is not who is right but what is right ______ is of importance． A．which B．it C．that D．this
BP will continue to be focused on making sure that the costs ________with oil spill cleanup in the Gulf of Mexico are paid. A.covered B.filled C.occup
硝酸是一种重要的化工原料，工业上一般以氨气为原料来制备硝酸。请回答： （1）氨气催化氧化的化学方程式为
— Tom knocked into the banisters（栏杆）last night while driving, but he is all right. — He is lucky. He himself badly. A. might injure B. could have injured
2．下列句中没有错别字的一项是（ ） A．人到了中年便时有闲愁，怪不得词人会感叹年华一瞬，容消金镜，壮志不再，我也不免有些感触。B．罗
量取15mL液体，应选用的一组仪器是（ ） ①5mL量筒 ②10mL量筒 ③20mL量筒 ④胶头滴管． A．① B．③④ C．③ D．②④
She could have given us a better impression，but she ______ a very short mini skirt. A．wear B．wears C．wore D．is worn
的定义域为（ ）
B. 
C. 
D. 
