对胰腺癌诊断最有价值的指标是（）CA199在胰腺癌和消化道肿瘤可呈较高的阳性率。 A 发布时间：2019-02-15 16:14 │ 来源：www.tikuol.com 题型：单项选择题 问题： 对胰腺癌诊断最有价值的指标是（）CA199在胰腺癌和消化道肿瘤可呈较高的阳性率。A.AFPB.CEAC.CA199D.CA125E.CA153
题型：单项选择题 阅读理解。 In some parts of the United States, farming is easy. But farming has always been difficult in thenortheastern corner of the country, which is called New England. New England has many trees and thin, rocky soil. Anyone who has wanted to start a new farm therehas had to work very hard. The first job has been cutting down trees. The next job has been diggingthe stumps of the trees out of the soil. Then the farmer has had the difficult job of removing stones fromhis land. This work of removing stones never really ends, because every winter more stones appear. They come up through the thin soil from the rocks below. Farmers have to keep removing stones from the fields. Eventoday, farms which have been worked on for 200 years keep producing more stones. That is why stone walls are used instead of fences around New England fields. The stone walls are nothigh; a man can easily climb over them. But they keep the farmer's cows from joining his neighbor's cows. 1. This selection explains _____. A. how to make a stone wall in New England B. why there are many stone walls in New England C. which parts of New England first used stone walls D. how many fences there are in England2. According to this selection farming is difficult in New England because _____.A. the winter is very long there B. the farms are very old C. the soil is rocky and thinD. the summer is too hot 3. This selection says that the work of removing stones _____. A. must be done again and again B. is usually done during the winter C. was more difficult before machines were used D. is easy after machines were used 4. In New England, stone walls are used _____. A. to protect the farmer's fields from thievesB. to keep the farmer's cattle from wandering away C. to provide privacy for the farmer's family D. to prevent the wind from blowing away the earth 查看答案
题型：单项选择题 下列人员中，可在资信评级机构中担任证券评级业务高级管理人员的是（）。A.被金融监管机构采取市场禁人措施，且禁入期未满B.最近1年在税务、工商、金融等行政管理机关以及自律组织、商业银行等机构无不良诚信记录C.最近2年未因违法经营受到行政处罚，不存在因涉嫌违法经营、犯罪正在被调查的人员D.在中国境内或者香港、澳门等地区工作满3年的境外人士 查看答案