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【单选题】
The sentence "He is a big wheel." means ______.A.
he has a big circle
B.
his legs are long
C.
his ear has big wheels
D.
he is a very important person
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【单选题】We're happy to report that business is booming this year．
A.
risky
B.
successful
C.
failing
D.
open
【单选题】According to the first two paragraphs, we can learn that
A.
clean energy business is booming while the risks are totally overlooked.
B.
venture capitalists have wasted much money on 'hippy-dippy tree hungers'.
C.
clean energy business is surging and changes the venture capital market.
D.
the information-technology industry is correspondingly shrinking fast.
【单选题】In the UK's Poundland shops, which stock everything from cosmetics to dog biscuit, business is booming.
A.
Poundland shops stock everything.
B.
Everything from cosmetics to dog biscuit.
C.
Business is booming.
D.
Poundland shop is booming.
【单选题】Were happy to report that business is booming this year.
A.
failing
B.
open
C.
successful
D.
risky
【简答题】同一主族元素中,从上而下,元素的金属性逐渐( )(填写增大或减小),同一周期元素,从左到右,元素的原子半径逐渐( ) (填写增大或减小)。
【简答题】根据表中信息回答下列问题。 元素 Si P S Cl 单质与氢气 反应的条件 高温 磷蒸气与氢气能反应 加热 光照或点燃时发生爆炸而化合 （1）S在元素周期表中的位置是 。 （2）根据表中信息可知，Si、P、S、Cl 四种元素的的非金属性依次增强。用原子结构解释原因：同周期元素电子层数相同，从左至右， ，原子半径逐渐减小，得电子能力逐渐增强。 （3）25℃时，以上四种元素的单质与氢气反应生成l m...
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