下列精神分裂症症状中，属于阳性症状的是（） A.思维贫乏 B.病理性象征性思维 C.

已知x+x^-1=3，则x²+x^-2=______．

怎样预防乙型病毒性肝炎（简称乙肝）在围生期的传播？

甲县国税局根据举报查明某私营企业有少缴税款的情况，遂于2003年8月5日依法作出税务处理决定：责令该企业10日内缴纳税款36000元，滞纳金1800元。该企业不服，事隔3个多月后向上一级国税局乙市国税局申请复议。乙市国税局以超过申请期限为由决定不予受理。次日，该企业以甲县国税局为被告向甲县人民法院提起行政诉讼，要求撤销甲县国税局的处理决定。对此案，甲县人民法院应( )。

A．以超过法定起诉期限为由，裁定驳回诉讼请求
B．以未经行政复议为由，裁定不予受理
C．受理
D．通知原告变更诉讼请求，原告拒绝变更的，判决不予受理

室内质量图中±2S表示（）

A.95.45%的质控结果在此范围之内

B.99%的质控结果在此范围之内

C.99.7%的质控结果在此范围之内

D.68.27%的质控结果在此范围之内

E.90%的质控结果在此范围之内

For many people today, reading is no longer relaxation. To keep up their work they must read letters, reports, trade publications, interoffice communications, not to mention newspapers and magazines: a never ending flood of words. In (1) a job or advancing in one, the ability to read and comprehend (2) can mean the difference between success and failure. Yet the unfortunate fact is that most of us are (3) readers. Most of us develop poor reading (4) at an early age, and never get over them. The main deficiency (5) in the actual stuff of language itself—words. Taken individually, words have (6) meaning until they are strung together into phrases, sentences and paragraphs. (7) , however, the untrained reader does not read groups of words. He laboriously reads one word at a time, often regressing to (8) words or passages. Regression, the tendency to look back over (9) you have just read, is a common bad habit in reading. Another habit which (10) down the speed of reading is vocalization—sounding each word either orally or mentally as (11) reads.

To overcome these bad habits, some reading clinics use a device called an (12) , which moves a bar(or curtain) down the page at a predetermined speed. The bar is set at a slightly faster rate (13) the reader finds comfortable, in order to "stretch" him. The accelerator forces the reader to read fast, (14) word by word reading, regression and subvocalization practically impossible. At first (15) is sacrificed for speed. But when you learn to read ideas and concepts, you will not only read faster, (16) your comprehension will improve. Many people have found (17) reading skill drastically improved after some training. (18) Charlie Au, a business manager, for instance. His reading rate was a reasonably good 172 words a minute(19) the training; now it is an excellent 1,378 words a minute. He is delighted that how he can (20) a lot more reading material in a short period of time.

第（6）空应选择（）

A．some

B．a lot

C．little

D．dull