关于细支气管肺泡癌(BAC)，描述正确的是

A:单纯的BAC应无间质,胸膜或区域淋巴的侵犯 B:BAC主要发生于支气管的Clara细胞,I2型肺泡细胞及黏液细胞，可能是一种异源性肿瘤 C:结直肠腺癌肺转移CK7 阳性，而CK20阴性,BAC通常CK7阴性，两者可由此鉴别 D:CDX-2在胃肠道肿瘤肺转移时可表达阳性，黏液性BAC为阴性 E:黏液型BAC表达CK20，不表达CK7，据报道缺乏TTF-1的表达；非黏液型BAC表达甲状腺转录因子-1（TTF-1），缺乏CK7和CK20的表达

对于锁的叙述，错误的是（）

A:锁是后牙的一种错位 B:锁多见于恒牙 C:正锁是上后牙舌尖的颊斜面与下后牙颊尖的舌斜面相合 D:正锁的上牙弓宽度大于下牙弓 E:反锁的上牙弓宽度小于下牙弓宽度

关于细支气管肺泡癌(BAC)，描述正确的是（）

A:单纯的BAC应无间质、胸膜或区域淋巴的侵犯 B:BAC主要发生于支气管的Clara细胞、Ⅱ型肺泡细胞及黏液细胞，可能是一种异源性肿瘤 C:结直肠腺癌肺转移CK7阳性，而CK20阴性，BAC通常CK7阴性，两者可由此鉴别 D:CDX-2在胃肠道肿瘤肺转移时可表达阳性，黏液性BAC为阴性 E:黏液型BAC表达CK20，不表达CK7，据报道缺乏TTF-1的表达；非黏液型BAC表达甲状腺转录因子-1（TTF-1），缺乏CK7和CK20的表达

BAC

Text 4
There is extraordinary exposure in the United States to the risks of injury and death from motor vehicle accidents. More than 80 percent of all households own passenger cars .or light trucks and each of these is driven an average of more than 11,000 miles each year. Almost one- half of fatally injured drivers have a blood alcohol concentration ( BAC ) of 0. I percent or higher. For the average adult, over five ounces of 80 proof spirits would have to be consumed over a short period of time to attain these levels. One third of drivers who have been drinking, but fewer than 4 percent of all drivers, demonstrate these levels. Although less than 1 percent of drives with BACs of 0.1 percent or more are involved in fatal crashed, the probability of their involvements is 27 times higher than for those without alcohol in their blood. There are a number of different approaches to reducing injuries in which drinking plays a role. Based on the observation that excessive consumption correlates with the total alcohol consumption of the country’s population, it has been suggested that higher taxes on alcohol would reduce both. While the heaviest drinkers would be taxed the most, anyone who drinks at all would be punished by this approach.
To make drinking and driving a criminal offense is an approach directed only at drinking drivers. In some states, the law empowers police to request breath tests of drivers committing any traffic offense and higher BAC can be basis for arrest. The National Highway Traffic Safety Administration estimates, however, that even with increased arrests, there are about 700 violations for every arrest. At this level there is little evidence that laws are effective ways to reduce drunk driving. In Britain, motor vehicle accidents fell 25 percent immediately following implementation of he Road Safety Act in 1967. As Britishers increasingly recognized that they could drink and not be stopped, the effectiveness declined, although in the following three years the death-rate seldom reached that observed in the seven years prior to the Act.
Whether penalties for driving with a high BAC or excessive taxation on consumption of alcoholic drink will deter the excessive drinker responsible for most accidents is unclear. One thing is clear, however, unless we deal with automobile and highway safety and reduce accidents in which alcoholic drinking plays a role, many will continue to die.

A:change an existing law to lower the BAC level which defined drank driving B:made it illegal for the drunk driver to drive C:increased the number of drunk driving arrests D:placed a tax on the sale of alcoholic drinks

______ your homework and make sure that you don't ______ any mistakes.

A:Do; do B:Make; make C:Make; do D:Do; make

______ your homework and make sure that you don't ______ any mistakes.

A:Do; do B:Make; make C:Make; do D:Do; make

______ your homework and make sure that you don't ______ any mistakes.

A:Do; do B:Make; make C:Make; do D:Do; make