Helen gave her daughter （） A: a ring B: to a ring C: for a ring D: with a ring
Helen gave her daughter （） A: a ring B: to a ring C: for a ring D: with a ring
The Ring of the Nibelung is generally known as the Ring or the Ring Cycle.
The Ring of the Nibelung is generally known as the Ring or the Ring Cycle.
Shelley is wearing a ring.
Shelley is wearing a ring.
Which statement is not true about quinidine ____. A: It<br/>is composed of quinolone ring and quinolone base ring. B: The<br/>two rings are connected by hydroxymethyl. C: Contains<br/>two substituents (methoxy and ethylene) D: It<br/>has four chiral carbons. E: The<br/>target is K+ channel blocker.
Which statement is not true about quinidine ____. A: It<br/>is composed of quinolone ring and quinolone base ring. B: The<br/>two rings are connected by hydroxymethyl. C: Contains<br/>two substituents (methoxy and ethylene) D: It<br/>has four chiral carbons. E: The<br/>target is K+ channel blocker.
A ring homomophism f from a ring R onto another ring S is an isomophism if and only if kerf=0.( )
A ring homomophism f from a ring R onto another ring S is an isomophism if and only if kerf=0.( )
中国大学MOOC: She was ________ by the telephone ring.
中国大学MOOC: She was ________ by the telephone ring.
We must answer the telephone by the first ring.
We must answer the telephone by the first ring.
Mary would never forget the evening she lost the ring.
Mary would never forget the evening she lost the ring.
She’s ______ me for a month to buy her a gold ring.
She’s ______ me for a month to buy her a gold ring.
The pupils went toward the door as soon as they heard the bell ring.
The pupils went toward the door as soon as they heard the bell ring.