50
(A)Nor does it have joints or valves.
(B)The heart is self-evidently a pump.
(C)The mystery of consciousness requires careful study.
(D)Some maintain that solving the problem of consciousness is controversial.

Trying to map the brain has always been cartography for fools. 大腦如何運作一直都是很一個謎題。

Most of the other parts of the body reveal their workings with little more than a glance. 身體其他部位如何運作大部分都多看幾眼就明白了。

48. (C)The heart is self-evidently a pump. –心臟不言而喻的就是個幫浦。

The lungs are clearly bellows; the stomach, technically, a grinder. 肺臟明顯就是風箱。性能/技術上來是，胃部就是個粉碎機。

49. (D)The mystery of consciousness requires careful study. – 有關意識的奧秘仍需要仔細研究

The 1.4-kg lump of wrinkled tissue apparently has no moving parts. – 很顯然這團1.4公斤滿是皺褶的組織沒有可移動的部位。

50 (B)Nor does it have joints or valves. – 他也沒有關節或瓣膜。

However, it not only serves as the motherboard for all the body’s other systems but also is the seat of your mind, your thoughts, your sense that you exist at all. –但這不僅像主機板似的控制全身其他系統還主宰著你的心緒，你的思想，你的感知和你存在的一切。

(A)You have your limbs. – 你有四肢

(B)Nor does it have joints or valves. – 他也沒有關節或瓣膜。

(C)The heart is self-evidently a pump. –心臟不言而喻的就是個幫浦。

(D)The mystery of consciousness requires careful study. – 有關意識的奧秘仍需要仔細研究

Cartography for fools 應該是出自於Fool’s Cap Map of the World 意味著神秘的/奧秘/謎團

self-evidently – 不言而喻的

at a glance – 一目了然

（A）也沒有接頭或閥門。 （B）心臟是不言而喻的泵。 （C）意識的奧秘需要仔細研究。 （D）一些人認為解決意識問題是有爭議的。