It is said that sandstorms will become more________ as a result of global warming.

将下面的文字排列成一段通顺的话，衔接最恰当的一组是（ ）（1）时常涵咏这类美文，自然能在潜移默化中受到启迪和熏陶、洗礼和升华，这种内化作用无疑是巨大的。（2）它纵贯古今，横亘中外，包容大千世界，穿透人生社会，寄寓于人生百态家长里短，闪现在思维领域万千景观。（3）哲理，是感悟的参透，思想的火花，理念的凝聚，睿智的结晶。（4）高明的作者，善于抓住哲理闪光的瞬间，形诸笔端，写就内涵丰厚、耐人寻味的美文。（5）说理散文往往拥有一个或多个中心思想，以抒情、记叙、论理等方式来表达自己的某个观点，一般都会阐述一个道理，所以，也有人叫它哲理散文。

Only by practicing a lot _____ our English well enoughto communicate with foreigners.

Steve wanted to play a trick Tom, but gave himself by laughing.

I don’t want to ask him for help, for he is a hard man. — But, in fact, he is _______ glad to help.