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【多选题】
下列离子方程式中不正确的是（ ）A.
在氯化铝溶液中加入过量烧碱溶液：Al 3+ +4OH - =AlO 2 - +2H 2 O
B.
在硫酸铜溶液中加入过量氢氧化钡溶液：Ba 2+ +SO 4 2- =BaSO 4 ↓
C.
在澄清石灰水中通入过量二氧化碳：CO 2 +OH - =HCO 3 -
D.
在碳酸氢钙溶液中加入过量苛性钾溶液：Ca 2+ +HCO 3 - +OH - =CaCO 3 ↓+H 2 O
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【单选题】It rained and rained,________ it would never stop. [ ]
A.
that
B.
which
C.
even though
D.
as if
【单选题】it ________ every day so far this month. is raining rained rains has rained
A.
is raining
B.
rained
C.
rains
D.
has rained
【单选题】It rained continually. It ______.
A.
stopped occasionally
B.
never stopped
C.
hardly rained at all
D.
never rained
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【单选题】It rained and rained,________ it would never stop. [ ]
A.
that
B.
which
C.
even though
D.
as if