Question

ÔĶÁÀí½â ¡¡¡¡What are you doing right now?Yes, you are reading this page£®That also means you¡¯re moving your eyes£®You¡¯re thinking£®You¡¯re breathing£®You¡¯re listening£®Possibly you¡¯re shifting(±ä»»)positions£®You¡¯re also feeling things£­this book, your chair, emotions£®What lets you do all these things at the same time?Your brain£® ¡¡¡¡Your brain is the control center of your body and mind£®Without your brain you can¡¯t do anything£®Your brain has more than 100 billion nerve(Éñ¾­)cells£®Each nerve cell makes from 1,000 to 10,000 connections with other nerve cells£®The nerve cells send impulses back and forth in your brain and to and from every part of your body£®After you reach the age of 20, though, your brain cells start to die£®This is common£®However, if you suffer an illness, or injury, even more nerve cells die in your brain£®When a nerve cell dies, the thousands of connections it made with other nerve cells are lost£® ¡¡¡¡Until recently, scientists believed that the brain did not replace its dead cells£®New studies, however, prove not£®Scientists have found new nerve cells in a part of the brain called the hippocampus(º£ÂíÇø)£®The hippocampus helps the brain form memories from new experiences£® ¡¡¡¡The discovery of these new nerve cells is not a cure for anything yet£®It gives hope, however, of a cure for brain damage from such things as epilepsy(ñ²ðﲡ), Lou Gehrig¡¯s disease, car accidents, and strokes£®Someday scientists might be able to use the new cells to replace damaged brain cells£®Such a cure, however, may take about ten years to develop£®So at the same time, use your head-protect it! (1) Nerve cells in the brain ________£® [¡¡¡¡] A£® send massages to every part of the body B£® make connections only to other cells in the brain C£® can cure Lou Gehrig¡¯s disease D£® are a person¡¯s memory (2) The last sentence of the passage suggests that people ________£® [¡¡¡¡] A£® should use their head by carefully thinking through situations B£® should be careful not to injure their brains C£® have a skull(Í·¸Ç¹Ç)that provides all the protection needed by the brain D£® would see a quick cure for brain disease (3) The author explains what the hippocampus is by ________£® [¡¡¡¡] A£® telling its history B£® comparing it to other parts of the brain C£® telling how it got its name D£® explaining what it does (4) Nerve impulses are ________£® [¡¡¡¡] A£® cures B£® disorders C£® memories D£® messages

Answer 1

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