A．The influence of the reward is weak In adolescents-

　　　B．Parents should help children in making decisions.

　　　C．Children should have access to the Internet.

　　　D．Children need help in refocusing their attention.

　　　10．What result does teenagers' brain underdevelopment Iead to?

　　　A．Doing things after some thought.

　　　B．Making good decisions.

　　　C．Joining in dangerous actions.

　　　D．Escaping risky behavior.

　　　11．How did the researchers carry out their study?

　　　A．By making a comparison of brain examinations.

　　　B．By examining adults' brain.

　　　C．By examining teenage brain.

　　　D．By building the train's reward system.

　　　Traditional Chinese medicine (TCM) is gaining global popularity. According to a government white paper, TCM has been introduced in 183 countries and regions around the world.

　　　Westerners' understanding of TCM, however, may be limited to acupundure，cupping and massage (针灸，拔罐和按摩). For instance, the purple, injury-like marks left on US.swimmer Michael Phelps' back from cupping for the purpose of relaxing his muscles and reducing pain became the center of attention during the Rio Olympics in 2016.

　　　As a matter of fact, Chinese herbs play a more important role in getting rid of diseases and keeping the body in good condition in the TCM treatment system than physical treatment.It is therefore disheartening to know that-while 103 World Health Organization member countries have given approval to the practice of acupuncture，not many recognize Chinese herbal medicine TCM falls far behind Western medicine owing parity to the slow development of Chinese herbs.

　　　Herbs, are made into pills,powder and soup, and the kind of herbs uscd1 their quality and quantity, and the processing of the ingredients jointly determine the effectiveness of the prescription. Compared with Western medicine, which has standardized drug production processes and treatment methods, TCM lacks standardization, with the chemical composition and functions of its medicines being unclear and their effects being unstable. Fortunately,standardization has improved in recent decades, with an increasing number of factories producing patented TCM drugs.

　　　Another factor that has prevented the development of TCM prescription drugs is the lack of creativity, While Western medicine-making companies come up with new products every year, TCM drug producers tend to make medicines according to prescriptions handed down from the past. Chinese chemist Tu Youyour's winning the 2015 Nobel Prize in Physiology or Medicine for her rescearch into malaria(疟疾）treatment may drive creativity to some extent in China's TCM industry. However, the current state of affairs cannot be changed within a short time.

　　　12．The author mentions the example of Michael Phelps in order to show .

　　　A．he was injured in his swimming.

　　　B．cupping is a kind of important TCM treatment.

　　　C．westerners know little about TCM.

　　　D．westerners attach great importance to TCM.

　　　13．Why don't some member countries of WIIO recognize Chinese herbal medicine?

　　　A．Because Chinese herbs can get rid of diseases

　　　B．Because they only approve the practice of acupuncture

　　　C．Because western medicine 15 more effective

　　　D．Because medicine made out or Chinese herbs develops slowly

　　　14．Compared with Western medicine，what is the main weak point of TCM ?

　　　A．The methods of processing herbs.

　　　B．The effediveness of prescription.

　　　C．Lacking in standardization.

　　　D．Its unstable functions.

　　　15．The lack of creativity in TCM refers to the fact that .

　　　A．medidne-making companies lack creativity.

　　　B．prescriptions are got from the past.

　　　C．Wesiem companies are mom experienced.

　　　D．medicine-making companies jack driving force

二、七选五

　　　Tolerance means tolerating or pulling up with differences.

　　　16．This concept means different things to different people, but it is when something is disagreeable that tolerance is expected, and in more politically correct cultures, demanded.

There are many different ways to show tolerance. A person might fully disagree with other on any issue,while at the same respecting those with different opinions and treat them with dignity17．.