问题 单项选择题

梯度回波序列的主要优点是

A.提高图像信噪比

B.提高空间分辨率

C.增加磁场均匀性

D.提高成像速度

E.减少噪声

答案

参考答案:D

单项选择题
完形填空
阅读下面短文,掌握其大意,然后从36至55各题所给的四个选项(A、B、C、D)中, 选出最佳选项,并在答题卡上将该项涂黑。
As a father, I greatly valued the moments    36   my son and I could be together, and that day was really special.
Louisville, Kentucky was a place where basketball was an important part of life, and   37    taking my son to an NBA exhibition game was one of those special moments. But little did I realize how special that evening was going to be! It was blowing some mean wind. Josh    38    my hand as we crossed the parking lot and    39   for the famous Freedom Hall.  40    eight years old, he still felt it was okay to hold his father’s hand, and I felt grateful, knowing that this kind of moments would pass    41  .
The stadium 42  nineteen-thousand-plus fans, and it definitely looked like a sellout(客满的).The expectation of seeing Mrhael Jordan and the Chicago Bulls 43  the Washington Bullets 44  our pace across the parking lot, thinking about  45  the game was going to go. The tumstile(十字转门)clicked and Josh hung on to his souvenir ticket stub (票根)like he had just won the lottery! We pushed our   46   to the upper-level seats of the “true” fans. Before we know it, the game was  47  way. During a time out, we dashed to   48     hot dog and Coke and rushed back so that we   49  miss a single part of the game. Things were going as expected until halftime. I started to talk to some friends 50  when there was a pull on my sleeve, my arm was pulled over by a  51       young Josh, and he began putting a multicolored, woven yarn bracelet(丝织手獨)around my wrist. It  52  really well, and he was really focused attentively as he carefully made a double square knot to keep it secure. On this special  53 I realized the significance of the moment. With a smile, I told him proudly how I knew this was a  “friendship brardet” and said, “I guess this means we are   54   ” Without missing a beat, his big brown eyes looking me straight in the face, he exclaimed, “We’re  55  friends. You’re my dad!”
小题1:
A.when B.whatC.that D.which
小题2:
A.particularly B.certainlyC.speciallyD.especially
小题3:
A.heldB.hadC.carriedD.caught
小题4:
A.leftB.setC.walkedD.headed
小题5:
A.AsB.ThoughC.ButD.Even
小题6:
A.oftenB.frequentlyC.soonD.slowly
小题7:
A.satB.seatedC.includedD.involved
小题8:
A.withB.forC.toD.against
小题9:
A.sped upB.looked upC.built upD.turned up
小题10:
A.whatB.thatC.whichD.how
小题11:
A.pathB.wayC.routeD.track
小题12:
A.onB.inC.byD.under
小题13:
A.eatB.bookC.orderD.make
小题14:
A.wouldn’tB.needn’tC.dared notD.mustn’t
小题15:
A.besidesB.nearC.nearbyD.beside
小题16:
A.exhaustedB.pleasedC.determinedD.astonished
小题17:
A.fitB.suitedC.matchedD.applied
小题18:
A.situationB.occasionC.positionD.condition
小题19:
A.neighborsB.classmatesC.teammatesD.friends
小题20:
A.no more thanB.better thanC.more thanD.other than