you begin the journey, for example, if it is per person, single or return. ______(三轮车) are ______  ______(值得被用) if you want to ______(探索) the ______(狭窄的) alleys (hutong) of old Beijing.
SB4 MODULE3 Greetings Around the World（一空一词）
If you say the word “_______“(交流), most people think of words and sentences. Although these are very important, we ________(交流) with more than just spoken and _______（书面的） words. Indeed, body _________(姿势) are part of _______ we call “body language”. We see examples of ______(无意识的) body language very often, yet there is also “learned” body language, _____ ______(变化)from culture to culture.
We use “learned” body language when we are introduced to strangers. Like other animals, we are ______  _______（警惕的） until we know it is safe to relax. So every culture has developed a formal way to ______(问候)strangers, to show them we are not _______(攻击的). ________(传统), Europeans and Americans shake hands. They do this with the right hand—the strongest hand for most people. If our right hand is busy  ______(问候) someone, it cannot be holding a ______(武器). So the ________(手势) is saying, “I ______(信任)you. Look, I’m not ______(拿,携带) a ________  ______(威胁性的武器).” If you shake hands with someone, you show you ______(信任) them. We shake hands when we _______ a ____ （达成协议）. It means, “We agree and we ______（信任）each other.”
________(问候) in Asian countries do not ________(牵涉到) touching the other person, but they always ________(牵涉到) the hands. ________(传统)in China, when we _______(问候) someone, we put the right hand over the left and ______  ______(稍微鞠躬). Muslims give a “salaam“, where they touch their heart, mouth and ______(前额). Hindus join their hands and _____(低下) their heads in ________（尊敬）.
Even today, when some people have very ______(不正式的) styles of ______(问候), they still use their hands as a _______(手势) of _____(信任). American ______(年轻人) often _______(问候) each other with the expression, “Give me five!” One person then _____ _____（举起） his hand, ______(手掌)outwards and five fingers _______(张开). The other person raises his hand and ______(掌击) the other’s open hand above the head in a “high five”.
Body language is _______(吸引人的) for anyone to study. People _____ ______（泄露） much more by their ________(手势) than by their words. Look at your friends and family and see if you are a _______(能看透别人心思的人)!
SB4 MODULE4 The Student Who Asked Questions
In a hungry world rice is a ______(主要的) food and China is the world’s largest _______(produce). Rice is also grown in many other _______(亚洲) countries, and in some ________(欧洲)countries like Italy. In the ________(水稻种植的) world, the Chinese scientist, Yuan Longping, is a _______  _______(顶尖人物).
Yuan Longping was born and ______ _______（抚养） in China. As a boy he was educated in many schools and was given the_______(绰号), “the student who asks questions”.
From an early age he was interested in plants. He studied ________(农业) in college and as a young teacher he began ________(试验) in crop breeding. He thought that the key to ________(feed) people was to have more rice and to produce it more quickly. He thought there was only one way to do this—by _______(杂交) different ______(品种) of rice plant, and then he could produce a new plant _______ could give a higher _____(产量) than either of the _______(原来的)plants.
First Yuan Longping _______(做实验) with different _______(品种) of rice. The results of his _______(试验) were _______(发表) in China in 1966. Then he began his _______(寻找) for a special _____(品种) of rice plant. It had to be male. It had to be sterile. Finally, in 1970 a _______(nature) sterile male rice plant was discovered. This was the ______(突破). Researchers were _______　________（引进）in from all over China to _________(开发) the new system. The research was _________（支持） by the _______（政府）.
As a result of Yuan Longping’s _______(发现) Chinese rice_______(生产) rose by 47.5 percent in the 1990’s. There were other _________(优势) too. 50 thousand square kilometres of rice fields were converted to growing vegetables and other _______(经济) crops. Following this, Yuan Longping’s rice was ________(出口) to other countries, such as Pakistan and the Philippines.
In Pakistan rice is the second most important crop after wheat and will be grown in many parts of the country. The new hybrid rice has been _______(开发) by the Yuan Longping High-tech _________（农业的）

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