【单选题】红杉树是地球上仅存的红木科树种之一,美国红杉树公司有一片高大巨拨的红杉,躯干通体绛红,冠上枝桠通天遮日,根部直径达到8米。据说世界上最大的红杉树在澳大利亚,不幸其主干毁于雷电,最终定格在75.2米。树木的生长也是竞争的过程,在成长中尽快长高、长大就能争取到更多的阳光,根都粗壮之后,从地下获得的水分也会增加。所以,_______。 填入划横线部分最恰当的一句是。
【单选题】What type of goods can net sling lift?
A.
Net sling is used to lift mails.
B.
Net sling is used to lift logs.
C.
Net sling is used to lift steel sheets.
D.
Net sling is used to lift timber.
【简答题】what is “board sling” used for?
【单选题】Twenty miles a long way to cover.
【单选题】Which of the following sentences is INCORRECT?(2012)
A.
Twenty miles seems like a long walk to him.
B.
No one except his supporters agree with him.
C.
Neither Julia nor I were going to the party.
D.
Few students in my class are really lazy.
【简答题】ax=8,当a=1时,x=( );当a=2时,x=( );当a=4时,x=( );当a=20时,x=( )。