Difficulties are nothing ___ we are not afraid of them.
| A．for | B．as | C．if | D．whether |
A rooster in Liaocheng, Shandong province, weighing 3 kilograms, ________ 14 eggs so far. The eggs are bigger than normal eggs.
| A．had lied | B．laid | C．has laid | D．lays |
Some so-called climate travelers _______ in one place for a few months and then move on to some other places as the weather changes.
| A．have stayed | B．are staying | C．stay | D．stayed |
The game was so exciting to play that the boy kept his eyes and attention ________ on it, ruining both a lot.
| A．fixing | B．fixed | C．to fix | D．fix |
The sides of the Iran nuclear negotiation reached a key point, the result of ________ would have a great influence on the world peace.
| A．that | B．which | C．whom | D．them |
The astronauts have to lie ________ the floor of the spaceship to fight against the great pressure during the flight.
| A．in | B．beyond | C．against | D．at |