直走穿过十字路口,电影院就在你的右边。 A: Go straight on over the crossing and the cinema is on your right. B: Go straight on over the roundabout and the cinema is on your right. C: Go straight on over the crossing and the cinema is on your left.

_____ can cause genes to move from one linkage group to another. A: Inversions B: Deletions C: Polyploidy D: Translocations E: Unequal crossing over

Be careful when you ________ the street. A: are crossing B: is crossing C: crossing D: is cross

What number in the above diagram represents when crossing over takes place? A: step 1 B: step 2 C: step 3 D: step 4

When crossing the Zhang River, General Xiang Yu ordered his troops to crush their cooking pots and burning their sailing ships because he saw no hope of achieving victory over their opponents.

Tube Crossing

Except for the number of people and the changes in formation, the motions of Big Crossing and Small Crossing are exactly the same.

“Crossing the Bar” is a poem that _______.

The only way ______ the river is by ferry. There isn’t a bridge for miles. A: cross B: crossing C: to cross D: to crossing

More railroad crossing should feature _____. A: warning lights B: crossing gates C: fencing D: quiet zone