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【多选题】
下列哪些属于计量学在国际贸易中所起到的重要作用?A.
进出口商品的检疫。
B.
进出口商品的原产地追溯。
C.
进出口商品的精确计量。
D.
进出口商品的质量检验。
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举一反三
【单选题】— We decided ______ trees on the hill, but we haven't decided how to get there. — Let's go by bike, ______? [ ]
A.
to plant; shall we
B.
to plant; will you
C.
planting; shall we
D.
planting; won't you
【简答题】When we the museum is not decided．
【简答题】唯物主义的三个发展阶段是（ ）。
【简答题】As the weather was fine, we decided to climb the mountain.
【简答题】(It's a good idea if we) inform all our customers by e-mail._______________________ inform all our customers by e-mail
【单选题】This house is really expensive. We are looking for an expert to() it before we decided to buy it.
A.
depend
B.
appraise
C.
demand
D.
apparent
【单选题】Rarely ()the opportunity to inform. our customers of such good news.
A.
had we have
B.
do we have
C.
we will have
D.
did we had
【简答题】随着老年人口的绝对数和相对数的增加, 日渐形成并扩大。
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