The term biological clock is applied to the means which living __1__
7 d1 m6 r3 K; Y/ p, v5 n things adjust their activity patterns, without any obvious cue, the __2__, j* S8 l" `+ [% ~& M' @4 z
time of day, or the month, or the year. They are affected but little,
- ?7 @' d, r, E! j if at all, by drugs, chemicals, or wide temperature differences—
) S1 F3 i* @8 v5 u [) X y1 c' r factors may alter substantially the rates of all ordinary processes of __3__ G1 `; n8 }* K
the body.- `$ i! d3 g3 I" z) e$ o
The nature of the biological clocks mechanism is still a mystery __4__# c$ [: W* S3 t
two quite different theories have been advanced to account to __5__
5 m" b. r' C7 }& c them. According to the first of these theories, each individual have
/ W+ c1 h8 q7 {# w' g envolved, aided by natural selection, an adaptation to the rhythmic __6__0 U* j# V4 l) B
environment. It has now become independent on the environment __7__+ B. p. |6 `- ?- h* i
according to this view, the clocks are not perfect timers.
* Z# e, }( ~7 s) x2 i+ u _: ?7 E They require regular corrections by the natural light and tide cycles
+ | n! a* i# T6 G$ E. \ and the changed lengths of the day throughout the year. __8__" V1 q5 u+ p3 L! X
The other theory holds up living things react continuously to __9__9 P/ w' \# w, E* x `
their rhythmic physical environment. The setting of their biological
) i4 M) N1 ~9 E, m clocks, therefore, involves a constant adjustment to subtle clocks/ h# x0 w* @/ E) s
which are potential perfect times. __10__
% B3 R! L% ]0 O! O/ _5 s& u 答案:
2 c) v3 I, ]6 I( P9 @& r2 Y 1.^which—by
3 V- e! \! s' P6 w8 M by the means of 指“通过……方式”,如果吧means作为先行词,后面定语从句就要有by,这句话意思是“生物钟指的是生物调节其行为的方式”。6 g1 i4 p, P- C2 b F& b6 ~
2.^the time – to' P* P) q) c# U6 _$ G
adjust A to B 指A适应B,这句指“在没有任何提示的情况下,是自己的行为方式适应外界的时间”。 ]7 ?8 \# u8 {& y
3.factors^--which/ that6 M/ Q) }: j; [( E9 m2 t4 @
这是一个定语从句,修饰factors,which/that做主语不能省略。
" K6 }9 Z2 N$ O 4.clocks—clock’s! I9 {* }4 T# {3 h* e& a/ ^
5.to(第二个)--for. ]9 k, B6 B. y7 s6 N: G% |9 O
account for意思是explain,为固定词组。
* w8 U2 `+ I6 b' \- I5 M 6.^an—as1 y( t, I' q* W% W$ Q8 ~8 i
这句话意思是“这些是由于对规律环境的适应进化而来的”。
' m+ x+ O: E+ P' Z 7.on—of, i! {- `4 k& | ]+ x4 U$ J
be independent of 意思是“独立于……,不依赖……”
7 t" [9 G6 |* |- ?3 }, j6 ^4 S1 ~ 8.changed—changing% w5 X: k$ t. @2 f- Y, y
文章要表达的是“变化着的长度”,应该用现在分词。/ `0 |% r# B. j+ V9 v1 l: M
9. up去掉或者将up改为that
0 G4 ^9 Q* {. X! R m hold本身就有“持……观点”的意思。
6 S2 n, G: K* w7 M) w% z" [7 k 10. potential—potentially |