通报用于反映新情况、新问题，行文强调及时快捷。 ( )

下面的坠落高度中，坠落半径最大，坠落时影响范围最大的是（）。

A.10米

B.50米

C.30米

D.80米

当事人约定由第三人向债权人履行债务的，第三人不履行债务或者履行债务不符合约定的，（）承担违约责任。

A.债务人应当向债权人

B.第三人应当向债务人

C.第三人应当向债权人

D.债务人应当向第三人

The Tricounty Bridge was supposed to relieve traffic in East Countway County. Although the bridge was opened last year, traffic in the county has gotten worse over the last year. To relieve the traffic situation in East Countway, therefore, the traffic commission should order the Tricounty Bridge closed.
Which of the following, if true, gives the most support to the conclusion of the passage above ？（）

A. The increased traffic seen in East Countway over the last year is largely attributable to a large casino and resort hotel that opened for business shortly after the opening of the Tricounty Bridge.

B. The Tricounty Bridge allows inhabitants of heavily populated West Countway County to reach East Countway in less than a half-hour, as opposed to the two hours the trip required before the opening of the bridge.

C. The bridge is only open for the periods 7-9 a.m. and 3-5 p.m. on weekdays.

D. Ship captains on the Countway River have complained that the bridge disrupts shipping on the river, thereby hurting the local economy.

E. The bridge is unlikely ever to pay for itself with the current low toll payment.

患者饭后尿糖（++），空腹尿糖阴性，进一步检查显示：空腹血糖5．3mmol／L，饭后2小时血糖7．1mmol／L，可诊断为（）

A.轻型糖尿病

B.糖耐量减低

C.继发性糖尿病性糖尿

D.食后糖尿

E.非葡萄糖糖尿

企业委托广告代理商开展广告业务的必要性在于（）。

A、广告代理商经验丰富

B、广告代理商开展业务运作费用相对较低

C、广告代理商知名度高

D、广告代理商在技术上保证质量