Examkin

Soru

Zorluk: KolayClause Boundaries and Linking

Astrochemists studying the interstellar medium have detected various complex organic molecules, including formaldehyde and methanol, inside massive star-forming regions. These dense molecular clouds contain high concentrations of cosmic dust and ______ shield the delicate compounds from the destructive ultraviolet radiation emitted by nearby stars, thereby allowing the molecules to persist over long periods.

Which choice completes the text so that it conforms to the conventions of Standard English?

  1. A
    gas, they
  2. B
    gas they
  3. gas; theyCevap
  4. D
    gas, but they

Cevap

gas; they
The option containing the semicolon correctly links two independent clauses. The clause before the blank ('These dense molecular clouds contain high concentrations of cosmic dust and gas') and the clause after the blank ('they shield the delicate compounds...') are both complete thoughts that can stand alone as sentences. A semicolon is a standard and grammatically correct way to join two independent clauses without a coordinating conjunction.

Adım Adım Çözüm

1
Identify the structure of the clauses around the blank.
The text before the blank ('These dense molecular clouds contain high concentrations of cosmic dust and gas') and the text after the blank ('they shield the delicate compounds...') are both independent clauses.
Understanding clause boundaries helps determine the appropriate punctuation or conjunction needed to link them.
2
Evaluate how two independent clauses can be grammatically linked.
Two independent clauses can be joined by a period, a semicolon, or a comma followed by a coordinating conjunction (such as 'and', 'but', or 'so').
This establishes the rules of Standard English conventions for clause linking.
3
Test the available options to see which one correctly and logically links the clauses.
The option containing a semicolon correctly links the two clauses. The option with a comma alone creates a comma splice, the option with no punctuation creates a run-on, and the option with 'but' introduces an illogical contrast.
Selecting the option that uses correct punctuation and maintains logical coherence ensures grammatical correctness.

Anahtar Kavram

Two independent clauses must be separated by a period, joined by a semicolon, or linked with a comma and a coordinating conjunction.
Bu soruyu puanla

Konular

Clause Boundaries and Linking

Bu konudan daha fazla soru