B．y saying that "the problems of mechanizing some areas are not only cultural in nature", the author means______.

A．) mechanization is not yet introduced in some areas for economic reasons

B．) human and animal labour in some areas are less expensive

C．)culture is not a factor in obstacling the introduction of mechanization

D．) different kinds of mechanized fanning tools are used in different cultures

[单选题]B．y saying "spending of any sort became deeply unfashionable" (Line 1-2, Para.3), the author sug- gests that（ ）[A] collectors were no longer actively involved in art-market auctions[B] people stopped every kind of spending and stayed away from gall

[单选题]B．y saying "the world has been spared a t.rue water war" (Line 1, Para.4), the author means（ ）[A] the water supply in the world is more than needed[B] the world has saved enough water to avoid the war[C] the world has never suffered a war triggered

[试题]_B__________ is another way of saying "bike"．

[单选题]B．y saying "Let's hope that this time it really will be the last one", the father meant that ______.A． he wished people had not built the bonfireB． he hoped people would not build any more bonfiresC． he hoped there would be no more wars in the wor

[单选题]When the teacher attempts to elicit more information from the students by s

[单选题]B．y saying these figures are conservative (Line 1, paragraph 3), Dr Worm means thatA． fishing technology has improved rapidly B. then catch-sizes are actually smaller then recorded C. the marine biomass has suffered a greater loss D. the data collect

[单选题]B．y saying these figures are conservative (Line 1, paragraph 3), Dr. Worm means that ________.[A] fishing technology has improved rapidly[B] then catch-sizes are actually smaller then recorded[C] the marine biomass has suffered a greater loss[D] the

[单选题]B．y saying “Middle children are invisible” in paragraph 3, Lewis means that middle children 。A． have to help their parents to serve dinnerB． get the least attention from the familyC． are often kept away from the dinner tableD． find it hard to keep up

[单选题]With （）, the corrosion problems are much reduced in a central cooling system.A . no equipment in contact with sea waterB . less equipment in contact with fresh waterC . more equipment in contact with sea waterD . less equipment in contact with sea wa

[单选题]What is the teacher doing by saying this in terms of instruction? "Now, did