[单选题]已知向量a、b满足|a|=1,|b|=4,且a·b=2,则a与b的夹角为A、B、C、D、
[单选题]-Did you remember to give Mary the money you owed her -Yes, I gave it to her ________ I saw her. [ ]A. while B. the moment C. suddenly D. once
[单选题]They returned home after a long journey, _______. [ ]A. hungry & tiredlyB. hungrily & tiredly C. tired & hungry D. tired & hungrily
[单选题]The new couple couldn’t afford a new house. _______, they bought a second-hand one.A.BesidesB.OtherwiseC.InsteadD.Still
[单选题]Jose cupped his hands together to cover his mouth ________ other people would see him cry.Aso thatB.now thatC.for fear that D.on condition that
[单选题]A. the sea ice melts sooner each swimmer,polar bears are forced to come ashore earlier and face food shortages _____ they have stored enough fat to last them through the season.[ ]A.beforeB.unlessC.sinceD.until
[单选题]Several weeks had gone by____I realized the painting was missing.?A.as B.before C.since D.when
[单选题]There was such a long queue for coffee at the interval that we ________ gave up. [ ]A. eventuallyB. unfortunatelyC. generouslyD. purposefully
[单选题]In no country, _____ Britain, it has been said, can one experience four seasons in the course of a single day. [ ]A. other than B. more than C. better thanD. rather than
[单选题]Anyone, whether he is an official or a bus driver, should be ?respected.A.especiallyB.equallyC.naturallyD.normally
[单选题]_____ she has been given such a chance, I think she should make full use of it.A. As soon as B. After C. AlthoughD. Now that
[单选题]They are_____ laborers who know how to spread the height of the rocks they carry.[ ]A. ambitiousB. potentialC. energeticD. experienced
[单选题]The great use of a school education is not so much to teach you things?_____ to teach you the art of learning. [ ]A. than B. rather than C. nor D. as
[单选题]One of the advantages with the new tool is that it is users ____. Users can handle it with less effort and more convenience.[ ]A. friendly B. good C. well D. pleased
[单选题]While there are quite a few differences in the education system, in many countries education is ____.A.usualB.regularC.normalD.universal
[单选题]He invited me to a dance after the show _____?Christmas Eve.[ ]A. at B. on C. in D. by
[单选题]You must keep on working in the evening _____ you are sure you can finish the task in time.( )A. as B. if C. when D. unless
[单选题]设平面向量=(1,2),=(﹣2,y),若∥,则|3+|等于[ ]A.B.C.17D.26
[单选题]Because of the small size of this primary school, it only admits a ____ number of children.[ ]A. limitedB. limitingC. limitationD. limit
[单选题]已知△ABC中,D是BC边的中点,过点D的直线分别交直线AB、AC于点E、F,若AE=AB,AF=UAC,其中A>0.>0,则L的最小值是( )A.1B.2C.1-3D.4
[单选题]—You look unhappy.Why—Im always __________ when I dont get any mail.[ ]A. confusedB. fearfulC. upsetD. doubtful