One is food security， another is climate change and the third is the threat of a worldwide outbreak of influenza. 其一是食品安全问题，另一个是气候变化，第三是流行感冒全球性爆发的威胁。
if we take short breaks__.19. Food in small pieces could be eaten easily from the sun twigs which_ turned into chopsticks.20. Walls make of adobe take in the heat from the sun on hot days and give out that heat_ during cool nights， thus warning the house.21. …
Distance does not ruin people's relationship. You don't have to see someone everyday to be in love. 两情若在久长时，又岂在朝朝暮暮。
第小题，空格前面的句子Traditional paper cuttings are often made with red paper中的red paper提示我们，空格处应该跟red paper有关，很容易选择F选项。
1.aloud（大声地）--cloud（云）2.bad（坏的）--sad（难过的）3.bank（银行）--rank（军衔）4.bed（床）--red（红的）5.beg（请求）--leg（腿）6.better（更好的）--letter（信）7.dig（挖）--pig（猪）8.
