主承销商自主推荐机构投资者的，应当制定明确的推荐标准，建立透明的推荐决策机制，并报中

女，65岁。常规体检发现脾左肋下5cm，化验：Hbl35g/L，WBC117×109/L，分类中幼粒5%，晚幼粒12%，杆状核22%，分叶中性粒34%，嗜酸粒8%，嗜碱粒5%，淋巴细胞14%，Plt560×109/L，NAP（-）。

为确定诊断，首选的检查是（）。

A.腹部CT

B.腹部B超

C.肝功能

D.血免疫球蛋白

E.骨髓检查

与棉混纺色织的重质聚酯平纹布

Gracey刮治器刮治磨牙近中用（）。

A.13/14号

B.5/6号

C.11/12号

D.1/11号

E.13/14号

含有空洞的肺结核，空洞无变化，需要观察多久才能判断为临床治愈（）

A.半年

B.1年

C.3年

D.2年

E.5年

Research on animal intelligence always makes me wonder just how smart humans are. (51) the fruit-fly experiments described in Carl Zimmer’s piece in the Science Times on Tuesday. Fruit flies who were taught to be smarter than the average fruit fly (52) to live shorter lives. This suggests that (53) bulbs burn longer, that there is an advantage in not being too terrifically bright.

Intelligence, it (54) , is a high-priced option. It takes more upkeep, burns more fuel and is slow off the starting line because it depends on learning—a (55) process—instead of instinct. Plenty of other species are able to learn, and one of the things they’ve apparently learned is when to (56) .

Is there an adaptive value to (57) intelligence That’s the question behind this new research. I like it. Instead of casting a wistful glance (58) at all the species we’ve left in the dust I.Q.-wise, it implicitly asks what the real (59) of our own intelligence might be. This is on the mind of every animal I’ve ever met.

Research on animal intelligence also makes me wonder what experiments animals would (60) on humans if they had the chance.

58().

A.upward 

B.forward 

C.afterward 

D.backward