宜阴干的药材是

某证券公司2021年2月25日举行了本年第一次董事会会议。本次会议议程是表决有关关联交易的议案。以下关于董事会会议的设置和议事规则错误的是（  ）。

甲、乙系夫妻，1998年5月儿子丙出生。2017年10月甲与侄子丁签订书面协议，约定在甲丧失民事行为能力时，丁担任甲的监护人。一年后甲丧失民事行为能力，其好友戊表示愿意担任甲的监护人，并得到甲住所地居委会的同意。此时甲的监护人是（    ）。

理财产品中的较高风险等级产品是指（    ）。

对证券交易的双方均征收印花税。（  ）

下列关于预防幼儿视力问题的最佳方法是(  )。

请阅读  Passage 1,完成第  21~25小题 。

Passage 1

First two hours, now three hours-this ishow far in advance authorities are recommending people show up to catch adomestic flight, at least at some major U.S. airports with increasingly massivesecurity lines.

Americans are willing to toleratetime-consuming security procedures in return for increased safety. The crash ofEgyptAir Flight 804, which terrorists may have downed over the Mediterranean Sea,provides another tragic reminder of why. But demanding too much of airtravelers or providing too little security in return undermines public supportfor the process. And it should: Wasted time is a drag on Americans ' economicand private lives, not to mention infuriating.

Last year, the Transportation SecurityAdministration (TSA) found in a secret check that undercover investigators wereable to sneak weapons-both fake and real-past airport security nearly everytime they tried. Enhanced security measures since then, combined with a rise inairline travel due to the improving economy and low oil prices, have resultedin long waits at major airports such as Chicago ' s O ' Hare International. Itis not yet clear how much more effective airline security has become-but thelines are obvious.

Part of the issue is that the governmentdid not anticipate the steep increase in airline travel, so the TSA is nowrushing to get new screeners on the line. Part of the issue is that airportshave only so much room for screening lanes. Another factor may be that morepeople are trying to overpack their carry-on bags to avoid checked-baggagefees, though the airlines strongly dispute this.

There is one step the TSA could take thatwould not require remodeling airports or rushing to hire: Enroll more people inthe PreCheck program. PreCheck is supposed to be a win-win for travelers andthe TSA. Passengers who pass a background check are eligible to use expectedscreening lanes. This allows the TSA to focus. on travelers who are higherrisk, saving time for everyone involved. The TSA wants to enroll 25 millionpeople in PreCheck.

Ithas not gotten anywhere close to that, and one big reason is sticker shock:Passengers must pay $85 every five years to process their background checks.Since the beginning, this price tag has been PreCheck ' s fatal flaw. Upcomingreforms might bring the price to a more reasonable level. But Congress shouldlook into doing so directly, by helping to finance PreCheck enrollment or tocut costs in other ways.

One problem with the PreCheck program is_________

下列选项中，不属于崇宁兴学措施的是（　　）。

通过金融市场把分散在不同主体手中的小额资金聚集为大额资金，短期续接为长期，储蓄转化成投资，是金融市场的（  ）功能。

下列行为表现中，不属于儿童孤独症的表现的是(    )。

根据《混凝土结构工程施工质量验收规范》（GB50204），预应力混凝土结构中，严禁使用(　　)。