下列极限计算正确的是（）

A -4 B -2 C 2 D 4

A -1 B 0 C 1 D 2

A 0．25 B 0．30 C 0．35 D 0．40

A <img src="https://www.beizhujiaoyu.com/uploads/202208/160991657071731.png" width="82" height="38" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/160991657588901.png" width="47" height="32" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/160991657846821.png" width="82" height="38" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/160991658210521.png" width="64" height="37" />

A 单调递增且曲线为凹的 B 单调递减且曲线为凸的 C 单调递增且曲线为凸的 D 单调递减且曲线为凹的

A <img src="https://www.beizhujiaoyu.com/uploads/202208/160991730913721.png" width="64" height="31" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/160991731488501.png" width="64" height="31" /> C sin2x D <img src="https://www.beizhujiaoyu.com/uploads/202208/160991731867141.png" width="112" height="31" />

A f'(e^x)dx B f'(e^x)e^xdx C f(e^x)e^xdx D f'(e^x)

A F(cosx)+C B F(sinx)+C C -F(cosx)+C D -F(sinx)+C

A (-∞，0) B (-2，2) C (0，+∞) D (-∞，+∞)