患者，男性，30岁，左下颌下肿胀半年，有消长史。检查：触及2cm×2cm大小囊性肿物

下列关于视神经的描述，正确的是（）

A.是真正的神经

B.有鞘膜

C.鞘膜内无Schwann细胞

D.其外包裹硬脑膜

E.视神经外包裹着软脑膜

下图是实验室一瓶标签破损的无色透明液体，小意同学对该液体进行了如下的实验探究：

（1）若用玻璃棒蘸取少量液体滴在一张白纸上，发现白纸变黑，则该瓶

液体是______．

（2）某同学不慎将上述液体沾到衣服上，应立即______，然后涂上3%～5%的碳酸氢钠溶液．

（3）将上述液体小心滴2滴到盛有氯化钡溶液的试管中，有______现象，反应的化学方程式为______．

与大型企业相比，中小企业独具的特点是（）。

A.数量多、分布广

B.体制灵活、组织精干

C.管理水平相对较低

D.产出规模小、竞争力弱

工人操作机械设备时，穿紧身适合工作服的目的是防止（）。

A.着凉

B.被机器转动部分缠绕

C.被机器弄污

D、漂亮

The U.S. Supreme Court’s decision Monday to let stand a ruling in an online defamation case will make it more difficult to determine correct legal jurisdictions in other Internet cases, legal experts said.

By opting not to take the case, the high court effectively endorsed a lower court’s decision that a Colorado company that posts ratings of health plans on the Internet could be sued for defamation in a Washington court. The lower court ruling is one of several that makes it easier for plaintiffs to sue Web site operators in their own jurisdictions, rather than where the operators maintain a physical presence.

The case involved a defamation suit filed by Chehalis, Wash.-based Northwest Healthcare Alliance against Lakewood, Colo.-based Healthgrades. com The Alliance sued in Washington federal court after Healthgrades. com posted a negative ranking of Northwest Healthcare’s home health services on the Internet. Healthgrades. com argued that it should not be subject to the jurisdiction of a court in Washington because its publishing operation is in Colorado.

Observers said the fact that the Supreme Court opted not to hear the case only clouds the legal situation for Web site operators.

Geoff Stewart, a partner at Jones Day in Washington, D. C. , said that the Supreme Court eventually must act on the issue, as Internet sites that rate everything from automobile dealerships to credit offers could scale back their offerings to avoid lawsuits originating numerous jurisdictions.

Online publishers also might have to worry about being dragged into lawsuits in foreign courts, said Dow Lohnes & Albertson attorney Jon Hart, who has represented the Online News Association.

"The much more difficult problems for U. S. media companies arise when claims are brought in foreign countries over content published in the United States," Hart said. Hart cited a recent case in which an Australian court ruled that Dow Jones must appear in a Victoria, Australia court to defend its publication of an article on the U. S.--based Walt Street Journal Web site.

According to Hart, the potential chilling effect of those sorts of jurisdictional decisions is substantial. "I have not yet seen publishers holding back on what they otherwise publish because they’re afraid they’re going to get sued in another country, but that doesn’t mean it won’t happen if we see a rash of U. S. libel cases against U. S. media companies being brought in foreign countries," he said.

Until the high court decides to weigh in directly on this issue, Web site operators that offer information and services to users located outside of their home states must deal with a thorny legal landscape, said John Morgan, a partner at Perkins Coie LLP and an expert in Internet law.

Geoff Steward maintains that the Supreme Court’s decision will make Internet companies（）

A. more liable to make negative ratings

B. more dubious about jurisdictions

C. more encouraged to launch defamations

D. more cautious in their offerings