北京时间2013年8月3日上午9点，在杭州钱江新城城市阳台的江面上，一年一度的横渡钱塘江活动启动。2013年杭州国际马拉松赛于北京时间11月3日8点在黄龙体育中心鸣枪开跑，全程42.195千米。依据材料及图示回答下列问题。

小题1:从“横渡钱塘江”到“国际马拉松赛”活动期间，太阳直射点的位置和移动方向是（  ）

A．先南半球后北半球，一直向北移

B．先北半球再南半球，一直向南移

C．南半球，先向南移后向北移

D．北半球，先向南移后向北移小题2:从“横渡钱塘江”到“国际马拉松赛”活动期间，地球公转速度变化的趋势是（  ）

A．越来越慢

B．越来越快

C．先变慢后变快

D．先变快后变慢小题3:从“横渡钱塘江”到“国际马拉松赛”活动期间，地球沿公转轨道运行的区间大约对应图示中（ ）

A．甲→乙

B．乙→丙

C．丙→丁

D．丁→甲小题4:位于美国旧金山（37°48′0″N，122°25′0″W ）的王雪想收看“杭州国际马拉松”赛事直播，那么，当黄龙体育中心鸣枪开跑时，王雪所在当地的区时是（ ）

A．11月3日16时

B．11月2日16时

C．11月3日8时

D．11月3日0时小题5:下图中，与“横渡钱塘江”当天最吻合的是（ ）

Electrical engineers have repeatedly demonstrated that the best solid-state amplifiers are indistinguishable from the best vacuum-tube amplifiers with respect to the characteristics commonly measured in evaluating the quality of an amplifier’s musical reproduction. Therefore, those music lovers who insist that recorded music sounds better when played with the best vacuum-tube amplifier than when played with the best solid-state amplifier must be imagining the difference in quality that they claim to bear.
Which one of the following, if true, most seriously weakens the argument

A．Many people cannot tell from listening to it whether a recording is being played with a very good solid-state amplifier or a very good vacuum-tube amplifier.

B．The range of variation with respect to the quality of musical reproduction is greater for vacuum-tube amplifiers than for solid-state amplifiers.

C．Some of the characteristics that are important in determining how music sounds to a listener cannot be measured.

D．Solid-state amplifiers are more compact, use less power, and generate less heat than vacuum-tube amplifiers that produce a comparable volume of sound.

E．(E) Some vacuum-tube amplifiers are clearly superior to some solid-state amplifiers with respect to the characteristics commonly measured in the laboratory to evaluate the quality of an amplifier’s musical reproduction.