小题1:Within this huge country, there are frozen wastes, vast mountain ranges, enormous open plains, countless rivers and __________ endless forests. 
小题2:__________ to the natural environment, many people feel that New Zealand is perfect for outdoor activities.
小题3:__________ Australia’s relatively small population, its outstanding performance in the Olympic Games was really amazing.
小题4:On 4 July1776, the Declaration of Independence was __________.
小题5:__________ it is generally true to say that humans like colour, our choices are not necessarily random.
小题6:Geldof __________ the concert to raise money for and public awareness of the famine.
小题7:On top of this, according to the United Nations, hunger and malnutrition __________ ten million lives every year. In fact, hunger is the number one global health risk, killing more people than any disease.
小题8:The virus is __________ in three ways—through unprotected sex, blood-to-blood contact and mother-to-child transmission.
小题9:Dr David Ho, a Chinese American leading Aids expert, has __________ his body and soul to bringing up-to-date technology and international attention to China’s Aids problem.
小题10:As many smokers may tell you, nicotine is very physically addictive, which is why many people have trouble __________ smoking.