Some scholars believe that levying securities transaction tax or raising the tax rate will increase transaction costs, curb speculation, and reduce market volatility, and vice versa.

有的学者认为，课征证券交易税或提高证券交易税的税率能增加交易成本，抑制投机，降低市场的波动性；反之，则刺激过度投机行为，扩大股市波动的幅度。

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Beijing has been trying to curb speculation in the property sector to prevent the formation of asset bubbles.

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Chinese property prices have continued to fall during April after the government kept policies in place to curb speculation.

BBC: China's property price fall sparks growth worries

There were also reports Monday that India has banned the purchase of foreign gold on credit, in order to curb speculation.

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