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【单选题】
煤矸石是煤炭生产过程中,开采挖掘出的及选洗时排出的含炭岩石,这是目前我国排放量最大的工业固体废弃物之一。据此完成 1 ~ 4 题。 我国煤矸石排放量最大的主要原因是( )A.
我国的能源结构以煤为主，煤炭产量居世界第一，与此同时 “产”出非常多的煤矸石
B.
我国煤矸石储量丰富
C.
我国煤炭品位低，含碳成分少
D.
我国众多小煤矿的乱采乱挖
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举一反三
【单选题】There are only ______ new words in the passage, but I know _____ of them.
A.
a little; none
B.
a few; none
C.
little; all
D.
few; all
【单选题】There are only ____ new words in the passage, but I know _____ of them. [ ]
A.
a few; none
B.
a little; none
C.
little; all
D.
few; all
【单选题】There are only ________ new words in the book, but I know _______ of them.
A.
a little, none
B.
few, all
C.
a few, none
D.
little, all
【简答题】用适当的溶剂在一定温度下浸泡药材,提取其有效成分的方法称为
【单选题】When I was at college I ___ threee foreign languages, but I ___ all except a few words of each.
A.
spoke, had forgotten
B.
spoke; have forgotten
C.
had spoken; had forgotten
D.
had spoken, have forgotten
【简答题】光伏支架进行 和 防锈处理,才能保用 30 年。
【单选题】I usually __________ a few words of greeting with my neighbour after breakfast. [ ]
A.
tease
B.
exchange
C.
sponsor
D.
appeal
【单选题】There are only ______ new words in this passage , but I know ______ of them .
A.
some ; all
B.
a few ; none
C.
lot of ; a few
D.
little ; none
【单选题】I don't understand the story though there are _______ new words in it. [ ]
A.
few
B.
little
C.
a few
D.
a little
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