The Coast Guards reported ____________ a ship without hanging its national flag. A.to seeB.to have seenC.seeingD.seen
The Coast Guards reported ____________ a ship without hanging its national flag.
A.to see
B.to have seen
C.seeing
D.seen
相关考题：
American people divide their days into several blocks of time, and plan different activities (41) () different times. American time is “on the dot”(准确地)). If something is supposed to happen at Eight o’clock, it will begin at eight. Americans value promptness(准时)and may become angry if a person is more than 15 minutes late (42) () a good reason. If you know you are going to be late, call in advance and let someone know. (43) () you arrive late, you should apologize and explain why. Americans arrive (44) () time for doctors’ appointments. The doctor may keep you (45) (), but if you keep the doctor waiting, you may get a bill with the doctor’s time!(1). A.for B.waiting C.on D.if E.without(2). A.for B.waiting C.on D.if E.without(3). A.for B.waiting C.on D.if E.without(4). A.for B.waiting C.on D.if E.without(5). A.for B.waiting C.on D.if E.without
A vessel in distress should send by radio telephone the two tone alarm signal followed immediately by the ______.A.distress positionB.spoken words “Mayday, Mayday, Mayday”C.ship’s nameD.ship’s call letters
The original experiment cannot be exactly duplicated.A:invented B:reproducedC:designed D:reported
The original experiment cannot be exactly duplicated.A:reproduced B:invented C:designed D:reported
真核生物ITS序列由ITS1和ITS2两部分组成。