A:in that
B:in order that
C:in case
D:even though
—Excuse me, is this _______ bicycle?
—No, it isn’t. _______ is over there under the tree.
⑴____ A.large B.age C.GermanD.ground
⑵____ A.school B.change C.cheap D.teacher
⑶____ A.headacheB.ChristmasC.machine D.school
⑷____ A.what B.whole C.which D.White
⑸____ A. warm B. parcel C. charcoal D. far
B组:空间存在一匀强磁场B,其方向垂直纸面向里,另有一个点电荷+Q的电场,如图所示,一带电﹣q的粒子以初速度v0从某处垂直电场、磁场入射,初位置到点电荷的距离为r,则粒子在电磁场中的运动轨迹可能为( )
—________.