If you are walking away from a clock tower ，you will hear the ticking of the clock fade to a point ________ it cannot be heard.
A、whichC
譯文：如果你從鐘塔旁走過.你將會聽到滴答聲，直到你走遠。此題考查定語從句。where在定語從句中做地點狀語，先行詞是apoint。
Lying under the skull, the human brain contains an average of ten billion nerve cells called ______.
Thesyntacticrulesofanylanguageare______innumber.
Johnsonwas________unknownbeforerunningforthepresidency.
Countrylifeisbetterthancitylife________itoffersfreshairandnoiselessenvironment
The syntactic rules of any language are ______ in number.
